#1D2177#1D2177

#1D2177 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.2% C 0.143 H 272.5°. Best body text is #FFFFFF at 13.67:1 contrast (WCAG AA passes).

Color values

HEX	#1D2177
RGB	rgb(29, 33, 119)
HSL	hsl(237, 61%, 29%)
HSV	hsv(237, 76%, 47%)
CMYK	cmyk(75.6%, 72.3%, 0%, 53.3%)
CIE-LAB	lab(18.72, 29.61, -49.37)
CIE-LCH	lch(18.72, 57.57, 300.95°)
OKLab	oklab(31.15% 0.0062 -0.1428)
OKLCH	oklch(31.15% 0.143 272.5)
XYZ	xyz(4.3792, 2.6804, 17.7358)
Luminance	0.0268 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2177 #77731D

analogous

#1D4E77 #1D2177 #461D77

triadic

#1D2177 #771D21 #21771D

tetradic

#1D2177 #771D4E #77731D #1D7746

square

#1D2177 #771D4E #77731D #1D7746

split-complementary

#1D2177 #77461D #4E771D

monochromatic

#060719 #111346 #1D2177 #292FA8 #3E45D0

Accessibility & contrast

On white

13.67

#1D2177 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#1D2177 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2177

13.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2177	#FFFFFF	#000000	##FFFFFF
##1D2177	1.00	13.67	1.54	13.67
#FFFFFF	13.67	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00327A

Deuteranopia (green-blind)

#002975

Tritanopia (blue-blind)

#003949

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1d2177;
/* rgb */ color: rgb(29, 33, 119);
/* oklch */ color: oklch(31.2% 0.143 272.5);

Tailwind

colors: {
  custom: {
    50: '#685d9f',
    500: '#1d2177',
    950: '#000000',
  },
}

SCSS

$custom: #1d2177;
$custom-light: #685d9f;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2177",
  "rgb": {
    "r": 29,
    "g": 33,
    "b": 119
  },
  "hsl": {
    "h": 237.333,
    "s": 60.811,
    "l": 29.02
  },
  "oklch": {
    "l": 0.31154,
    "c": 0.14294,
    "h": 272.5
  },
  "luminance": 0.02681
}

Semantic roles & 50–950 ramp

primary

#1D2177

secondary

#ABA645

accent

#DD44E4

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07040F

muted

#7A797E

Preview Lab

Preview with #1D2177

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →