#1D256E#1D256E

#1D256E is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.0% C 0.125 H 272.0°. Best body text is #FFFFFF at 13.62:1 contrast (WCAG AA passes).

Color values

HEX	#1D256E
RGB	rgb(29, 37, 110)
HSL	hsl(234, 58%, 27%)
HSV	hsv(234, 74%, 43%)
CMYK	cmyk(73.6%, 66.4%, 0%, 56.9%)
CIE-LAB	lab(18.84, 23.47, -43.36)
CIE-LCH	lch(18.84, 49.31, 298.43°)
OKLab	oklab(30.98% 0.0043 -0.1252)
OKLCH	oklch(30.98% 0.125 272)
XYZ	xyz(3.9818, 2.7097, 15.0620)
Luminance	0.0271 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D256E #6E661D

analogous

#1D4E6E #1D256E #3E1D6E

triadic

#1D256E #6E1D25 #256E1D

tetradic

#1D256E #6E1D4E #6E661D #1D6E3E

square

#1D256E #6E1D4E #6E661D #1D6E3E

split-complementary

#1D256E #6E3E1D #4E6E1D

monochromatic

#060818 #10153E #1D256E #2A359E #3A49CB

Accessibility & contrast

On white

13.62

#1D256E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#1D256E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D256E

13.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D256E	#FFFFFF	#000000	##FFFFFF
##1D256E	1.00	13.62	1.54	13.62
#FFFFFF	13.62	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003270

Deuteranopia (green-blind)

#002A6D

Tritanopia (blue-blind)

#003845

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1d256e;
/* rgb */ color: rgb(29, 37, 110);
/* oklch */ color: oklch(31.0% 0.125 272.0);

Tailwind

colors: {
  custom: {
    50: '#665f98',
    500: '#1d256e',
    950: '#000000',
  },
}

SCSS

$custom: #1d256e;
$custom-light: #665f98;
$custom-dark: #000000;

JSON

{
  "hex": "#1d256e",
  "rgb": {
    "r": 29,
    "g": 37,
    "b": 110
  },
  "hsl": {
    "h": 234.074,
    "s": 58.273,
    "l": 27.255
  },
  "oklch": {
    "l": 0.30975,
    "c": 0.12527,
    "h": 272
  },
  "luminance": 0.0271
}

Semantic roles & 50–950 ramp

primary

#1D256E

secondary

#A29944

accent

#D246E1

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040E

muted

#7A797E

Preview Lab

Preview with #1D256E

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

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