#2100a1

Color #2100a1

A vivid, highly saturated dark blue.

Closest named color Dark Blue #00008b · ΔE 9.58 Nearest Tailwind class violet-900 #4d179a · ΔE 5.8

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

Conversions

HEX

#2100a1

RGB

rgb(33, 0, 161)

HSL

hsl(252.3, 100%, 31.6%)

HSV / HSB

hsv(252.3, 100%, 63.1%)

CMYK

cmyk(79.5%, 100%, 0%, 36.9%)

LAB

lab(19.62, 56.62, -74.13)

LCH

lch(19.62, 93.28, 307.37)

OKLCH

oklch(33.4%, 0.2141, 272.38)

HWB

hwb(252.3, 0%, 36.9%)

Harmony colors

Complementary

#80a100

Analogous

#0030a1

#2100a1

#7200a1

Triadic

#2100a1

#a12100

#00a121

Split-complementary

#2100a1

#a17200

#30a100

Tetradic

#2100a1

#a10080

#80a100

#00a121

Square

#2100a1

#a10030

#80a100

#00a172

Shades

Color #2100a1 mixed toward black.

#1c0086

#16006b

#110051

#0b0036

#06001b

Tints

Color #2100a1 mixed toward white.

#2d00db

#4616ff

#7451ff

#a38bff

#d1c5ff

Tones

Color #2100a1 mixed toward gray.

#290d94

#311b86

#392879

#41366b

#49435e

Accessibility

Aa White text on this color

13.3:1

Aa Black text on this color

1.58:1

White text reads better on this background (13.3:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#17178e · ΔE 3.9

Deuteranopia

#191b89 · ΔE 5

Tritanopia

#207c78 · ΔE 42.1

Achromatopsia

#2f2f2f · ΔE 30.1

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

Code

CSS

background-color: #2100a1;

Tailwind (arbitrary value)

bg-[#2100a1]

Related colors

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Slate Blue #6a5acd

Medium Purple #9370db

Navy #000080

Lavender #e6e6fa

Frequently asked questions

#2100a1 (#2100a1) is rgb(33, 0, 161) in RGB.

No, #2100a1 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 #2100a1, or check how it holds up for accessibility.

Generate a palette → Check contrast