#1C256A#1C256A

#1C256A is a dark, moderate blue. Relative luminance 0.026; OKLCH L 30.5% C 0.120 H 271.6°. Best body text is #FFFFFF at 13.80:1 contrast (WCAG AA passes).

Color values

HEX	#1C256A
RGB	rgb(28, 37, 106)
HSL	hsl(233, 58%, 26%)
HSV	hsv(233, 74%, 42%)
CMYK	cmyk(73.6%, 65.1%, 0%, 58.4%)
CIE-LAB	lab(18.41, 21.76, -41.47)
CIE-LCH	lch(18.41, 46.83, 297.69°)
OKLab	oklab(30.53% 0.0033 -0.1197)
OKLCH	oklch(30.53% 0.12 271.6)
XYZ	xyz(3.7411, 2.6103, 13.9395)
Luminance	0.0261 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C256A #6A611C

analogous

#1C4C6A #1C256A #3A1C6A

triadic

#1C256A #6A1C25 #256A1C

tetradic

#1C256A #6A1C4C #6A611C #1C6A3A

square

#1C256A #6A1C4C #6A611C #1C6A3A

split-complementary

#1C256A #6A3A1C #4C6A1C

monochromatic

#060818 #0F143A #1C256A #29369A #3647CA

Accessibility & contrast

On white

13.80

#1C256A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#1C256A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C256A

13.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C256A	#FFFFFF	#000000	##FFFFFF
##1C256A	1.00	13.80	1.52	13.80
#FFFFFF	13.80	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00316C

Deuteranopia (green-blind)

#002969

Tritanopia (blue-blind)

#003743

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1c256a;
/* rgb */ color: rgb(28, 37, 106);
/* oklch */ color: oklch(30.5% 0.120 271.6);

Tailwind

colors: {
  custom: {
    50: '#645f95',
    500: '#1c256a',
    950: '#000000',
  },
}

SCSS

$custom: #1c256a;
$custom-light: #645f95;
$custom-dark: #000000;

JSON

{
  "hex": "#1c256a",
  "rgb": {
    "r": 28,
    "g": 37,
    "b": 106
  },
  "hsl": {
    "h": 233.077,
    "s": 58.209,
    "l": 26.275
  },
  "oklch": {
    "l": 0.30526,
    "c": 0.11972,
    "h": 271.6
  },
  "luminance": 0.02611
}

Semantic roles & 50–950 ramp

primary

#1C256A

secondary

#9F9443

accent

#D046E1

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040D

muted

#7A797E

Preview Lab

Preview with #1C256A

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

Preview Lab → · Contrast checker → · Palette generator →