#1C256B#1C256B

#1C256B is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.6% C 0.121 H 271.5°. Best body text is #FFFFFF at 13.76:1 contrast (WCAG AA passes).

Color values

HEX	#1C256B
RGB	rgb(28, 37, 107)
HSL	hsl(233, 59%, 26%)
HSV	hsv(233, 74%, 42%)
CMYK	cmyk(73.8%, 65.4%, 0%, 58%)
CIE-LAB	lab(18.50, 22.16, -41.97)
CIE-LCH	lch(18.50, 47.46, 297.83°)
OKLab	oklab(30.62% 0.0032 -0.1211)
OKLCH	oklch(30.62% 0.121 271.5)
XYZ	xyz(3.7934, 2.6312, 14.2150)
Luminance	0.0263 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C256B #6B621C

analogous

#1C4D6B #1C256B #3B1C6B

triadic

#1C256B #6B1C25 #256B1C

tetradic

#1C256B #6B1C4D #6B621C #1C6B3B

square

#1C256B #6B1C4D #6B621C #1C6B3B

split-complementary

#1C256B #6B3B1C #4D6B1C

monochromatic

#060818 #0F143A #1C256B #29369C #3748CB

Accessibility & contrast

On white

13.76

#1C256B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1C256B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C256B

13.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C256B	#FFFFFF	#000000	##FFFFFF
##1C256B	1.00	13.76	1.53	13.76
#FFFFFF	13.76	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00316D

Deuteranopia (green-blind)

#002A6A

Tritanopia (blue-blind)

#003744

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1c256b;
/* rgb */ color: rgb(28, 37, 107);
/* oklch */ color: oklch(30.6% 0.121 271.5);

Tailwind

colors: {
  custom: {
    50: '#645f96',
    500: '#1c256b',
    950: '#000000',
  },
}

SCSS

$custom: #1c256b;
$custom-light: #645f96;
$custom-dark: #000000;

JSON

{
  "hex": "#1c256b",
  "rgb": {
    "r": 28,
    "g": 37,
    "b": 107
  },
  "hsl": {
    "h": 233.165,
    "s": 58.519,
    "l": 26.471
  },
  "oklch": {
    "l": 0.30622,
    "c": 0.12119,
    "h": 271.5
  },
  "luminance": 0.02632
}

Semantic roles & 50–950 ramp

primary

#1C256B

secondary

#A09543

accent

#D046E2

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040D

muted

#7A797E

Preview Lab

Preview with #1C256B

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

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