#258b9a

Color #258b9a

A moderately saturated dark cyan.

Closest named color Dark Cyan #008b8b · ΔE 10.52 Nearest Tailwind class cyan-600 #0092b8 · ΔE 7.9

Open in Palette generator Color wheel Color mixer Contrast checker Blindness simulator Gradient

Conversions

HEX

#258b9a

RGB

rgb(37, 139, 154)

HSL

hsl(187.7, 61.3%, 37.5%)

HSV / HSB

hsv(187.7, 76%, 60.4%)

CMYK

cmyk(76%, 9.7%, 0%, 39.6%)

LAB

lab(53.16, -23.02, -16.21)

LCH

lch(53.16, 28.15, 215.15)

OKLCH

oklch(58.7%, 0.0914, 209.57)

HWB

hwb(187.7, 14.5%, 39.6%)

Harmony colors

Complementary

#9a3425

Analogous

#259a6f

#258b9a

#25519a

Triadic

#258b9a

#9a258b

#8b9a25

Split-complementary

#258b9a

#9a2551

#9a6f25

Tetradic

#258b9a

#34259a

#9a3425

#8b9a25

Square

#258b9a

#6f259a

#9a3425

#519a25

Shades

Color #258b9a mixed toward black.

#1f7481

#195d67

#13464d

#0c2e33

#06171a

Tints

Color #258b9a mixed toward white.

#2fb2c5

#54c5d6

#7ed4e0

#a9e2ea

#d4f1f5

Tones

Color #258b9a mixed toward gray.

#2f8490

#397d87

#42757d

#4c6e73

#566769

Accessibility

Aa White text on this color

4.01:1

Aa Black text on this color

5.24:1

Black text reads better on this background (5.24:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#626397 · ΔE 26.6

Deuteranopia

#5d5596 · ΔE 29.7

Tritanopia

#319493 · ΔE 7.2

Achromatopsia

#7f7f7f · ΔE 20.1

Left half is the original, right half is the simulated appearance. See all 8 vision types →

Code

CSS

background-color: #258b9a;

Tailwind (arbitrary value)

bg-[#258b9a]

Related colors

Powder Blue #b0e0e6

Cadet Blue #5f9ea0

Dark Turquoise #00ced1

Light Blue #add8e6

Deep Sky Blue #00bfff

Aqua #00ffff

Frequently asked questions

#258b9a (#258b9a) is rgb(37, 139, 154) in RGB.

No, #258b9a is not one of the 216 web-safe colors — for that, every RGB channel would have to be a multiple of 51.

Related tools

Colors

HEX to RGB Converter

Convert any HEX color code to its RGB and HSL equivalents, live, with copy-to-clipboard values.

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Contrast Checker

Check the WCAG contrast ratio between any two colors, live, with AA/AAA pass-fail results.

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Palette Generator

Generate complementary, analogous, triadic, split-complementary, tetradic, square, and monochromatic palettes from any base color.

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Build something with this color

Generate a full palette from #258b9a, or check how it holds up for accessibility.

Generate a palette → Check contrast