#1f21ad

Color #1f21ad

A moderately saturated medium blue.

Closest named color Dark Blue #00008b · ΔE 11.08 Nearest Tailwind class indigo-800 #372aac · ΔE 2.7

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

Conversions

HEX

#1f21ad

RGB

rgb(31, 33, 173)

HSL

hsl(239.2, 69.6%, 40%)

HSV / HSB

hsv(239.2, 82.1%, 67.8%)

CMYK

cmyk(82.1%, 80.9%, 0%, 32.2%)

LAB

lab(24.94, 48.44, -72.56)

LCH

lch(24.94, 87.24, 303.73)

OKLCH

oklch(37.4%, 0.2101, 269.7)

HWB

hwb(239.2, 12.2%, 32.2%)

Harmony colors

Complementary

#adab1f

Analogous

#1f68ad

#1f21ad

#641fad

Triadic

#1f21ad

#ad1f21

#21ad1f

Split-complementary

#1f21ad

#ad641f

#68ad1f

Tetradic

#1f21ad

#ab1fad

#adab1f

#21ad1f

Square

#1f21ad

#ad1f68

#adab1f

#1fad64

Shades

Color #1f21ad mixed toward black.

#1a1b90

#151673

#101056

#0a0b3a

#05051d

Tints

Color #1f21ad mixed toward white.

#2729d8

#5254e0

#7d7fe8

#a9a9ef

#d4d4f7

Tones

Color #1f21ad mixed toward gray.

#2b2ca1

#373895

#434389

#4e4f7e

#5a5a72

Accessibility

Aa White text on this color

11.17:1

Aa Black text on this color

1.88:1

White text reads better on this background (11.17:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#202099 · ΔE 2.7

Deuteranopia

#202094 · ΔE 3.4

Tritanopia

#1f8783 · ΔE 42.2

Achromatopsia

#3b3b3b · ΔE 29.5

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

Code

CSS

background-color: #1f21ad;

Tailwind (arbitrary value)

bg-[#1f21ad]

Related colors

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Medium Blue #0000cd

Frequently asked questions

#1f21ad (#1f21ad) is rgb(31, 33, 173) in RGB.

No, #1f21ad is not web-safe. The nearest web-safe colors are among its tones and shades below.

Related tools

Colors

HEX to RGB Converter

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

Try it → Accessibility

Contrast Checker

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

Try it → Generators

Palette Generator

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

Try it →

Build something with this color

Generate a full palette from #1f21ad, or check how it holds up for accessibility.

Generate a palette → Check contrast