#1C256D#1C256D

#1C256D is a dark, vivid blue. Relative luminance 0.027; OKLCH L 30.8% C 0.124 H 271.5°. Best body text is #FFFFFF at 13.68:1 contrast (WCAG AA passes).

Color values

HEX	#1C256D
RGB	rgb(28, 37, 109)
HSL	hsl(233, 59%, 27%)
HSV	hsv(233, 74%, 43%)
CMYK	cmyk(74.3%, 66.1%, 0%, 57.3%)
CIE-LAB	lab(18.69, 22.94, -42.97)
CIE-LCH	lch(18.69, 48.71, 298.10°)
OKLab	oklab(30.82% 0.0032 -0.1241)
OKLCH	oklch(30.82% 0.124 271.5)
XYZ	xyz(3.8998, 2.6738, 14.7756)
Luminance	0.0267 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C256D #6D641C

analogous

#1C4E6D #1C256D #3C1C6D

triadic

#1C256D #6D1C25 #256D1C

tetradic

#1C256D #6D1C4E #6D641C #1C6D3C

square

#1C256D #6D1C4E #6D641C #1C6D3C

split-complementary

#1C256D #6D3C1C #4E6D1C

monochromatic

#060818 #0F143C #1C256D #29369E #3848CC

Accessibility & contrast

On white

13.68

#1C256D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1C256D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C256D

13.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C256D	#FFFFFF	#000000	##FFFFFF
##1C256D	1.00	13.68	1.53	13.68
#FFFFFF	13.68	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00316F

Deuteranopia (green-blind)

#002A6C

Tritanopia (blue-blind)

#003845

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1c256d;
/* rgb */ color: rgb(28, 37, 109);
/* oklch */ color: oklch(30.8% 0.124 271.5);

Tailwind

colors: {
  custom: {
    50: '#655f98',
    500: '#1c256d',
    950: '#000000',
  },
}

SCSS

$custom: #1c256d;
$custom-light: #655f98;
$custom-dark: #000000;

JSON

{
  "hex": "#1c256d",
  "rgb": {
    "r": 28,
    "g": 37,
    "b": 109
  },
  "hsl": {
    "h": 233.333,
    "s": 59.124,
    "l": 26.863
  },
  "oklch": {
    "l": 0.30815,
    "c": 0.12412,
    "h": 271.5
  },
  "luminance": 0.02674
}

Semantic roles & 50–950 ramp

primary

#1C256D

secondary

#A29743

accent

#D145E2

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040E

muted

#7A797E

Preview Lab

Preview with #1C256D

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

Preview Lab → · Contrast checker → · Palette generator →