#153a3f

Color #153a3f

A moderately saturated very dark cyan.

Closest named color Dark Slate Gray #2f4f4f · ΔE 9.76 Nearest Tailwind class teal-950 #022f2e · ΔE 5.5

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

Conversions

HEX

#153a3f

RGB

rgb(21, 58, 63)

HSL

hsl(187.1, 50%, 16.5%)

HSV / HSB

hsv(187.1, 66.7%, 24.7%)

CMYK

cmyk(66.7%, 7.9%, 0%, 75.3%)

LAB

lab(22.1, -11.32, -7.06)

LCH

lch(22.1, 13.34, 211.95)

OKLCH

oklch(32.4%, 0.0427, 207.35)

HWB

hwb(187.1, 8.2%, 75.3%)

Harmony colors

Complementary

#3f1a15

Analogous

#153f2f

#153a3f

#15253f

Triadic

#153a3f

#3f153a

#3a3f15

Split-complementary

#153a3f

#3f1525

#3f2f15

Tetradic

#153a3f

#1a153f

#3f1a15

#3a3f15

Square

#153a3f

#2f153f

#3f1a15

#253f15

Shades

Color #153a3f mixed toward black.

#123035

#0e272a

#0b1d20

#071315

#040a0b

Tints

Color #153a3f mixed toward white.

#276b74

#399caa

#5fbdca

#95d3dc

#cae9ed

Tones

Color #153a3f mixed toward gray.

#19373c

#1c3538

#203235

#232f31

#272d2e

Accessibility

Aa White text on this color

12.29:1

Aa Black text on this color

1.71:1

White text reads better on this background (12.29:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#292a3e · ΔE 18.8

Deuteranopia

#27243e · ΔE 22.1

Tritanopia

#183d3d · ΔE 3.1

Achromatopsia

#353535 · ΔE 13

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

Code

CSS

background-color: #153a3f;

Tailwind (arbitrary value)

bg-[#153a3f]

Related colors

Powder Blue #b0e0e6

Cadet Blue #5f9ea0

Dark Turquoise #00ced1

Aqua #00ffff

Azure #f0ffff

Dark Cyan #008b8b

Frequently asked questions

#153a3f (#153a3f) is rgb(21, 58, 63) in RGB.

No, #153a3f 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 #153a3f, or check how it holds up for accessibility.

Generate a palette → Check contrast