#1D2157#1D2157

#1D2157 is a dark, moderate blue. Relative luminance 0.020; OKLCH L 28.0% C 0.096 H 275.1°. Best body text is #FFFFFF at 14.92:1 contrast (WCAG AA passes).

Color values

HEX	#1D2157
RGB	rgb(29, 33, 87)
HSL	hsl(236, 50%, 23%)
HSV	hsv(236, 67%, 34%)
CMYK	cmyk(66.7%, 62.1%, 0%, 65.9%)
CIE-LAB	lab(15.68, 17.33, -33.34)
CIE-LCH	lch(15.68, 37.57, 297.46°)
OKLab	oklab(28% 0.0086 -0.0958)
OKLCH	oklch(28% 0.096 275.1)
XYZ	xyz(2.7703, 2.0368, 9.2621)
Luminance	0.0204 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2157 #57531D

analogous

#1D3E57 #1D2157 #361D57

triadic

#1D2157 #571D21 #21571D

tetradic

#1D2157 #571D3E #57531D #1D5736

square

#1D2157 #571D3E #57531D #1D5736

split-complementary

#1D2157 #57361D #3E571D

monochromatic

#080917 #0E1029 #1D2157 #2C3285 #3C44B3

Accessibility & contrast

On white

14.92

#1D2157 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#1D2157 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2157

14.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2157	#FFFFFF	#000000	##FFFFFF
##1D2157	1.00	14.92	1.41	14.92
#FFFFFF	14.92	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A59

Deuteranopia (green-blind)

#002556

Tritanopia (blue-blind)

#002E38

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #1d2157;
/* rgb */ color: rgb(29, 33, 87);
/* oklch */ color: oklch(28.0% 0.096 275.1);

Tailwind

colors: {
  custom: {
    50: '#605c87',
    500: '#1d2157',
    950: '#000000',
  },
}

SCSS

$custom: #1d2157;
$custom-light: #605c87;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2157",
  "rgb": {
    "r": 29,
    "g": 33,
    "b": 87
  },
  "hsl": {
    "h": 235.862,
    "s": 50,
    "l": 22.745
  },
  "oklch": {
    "l": 0.27996,
    "c": 0.09618,
    "h": 275.1
  },
  "luminance": 0.02037
}

Semantic roles & 50–950 ramp

primary

#1D2157

secondary

#8C8744

accent

#D04EDA

background

#F5F5F8

surface

#EAE9EF

border

#C6C5CA

text

#05040B

muted

#79797C

Preview Lab

Preview with #1D2157

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

Preview Lab → · Contrast checker → · Palette generator →