#1C255B#1C255B

#1C255B is a dark, moderate blue. Relative luminance 0.023; OKLCH L 29.1% C 0.097 H 271.9°. Best body text is #FFFFFF at 14.33:1 contrast (WCAG AA passes).

Color values

HEX	#1C255B
RGB	rgb(28, 37, 91)
HSL	hsl(231, 53%, 23%)
HSV	hsv(231, 69%, 36%)
CMYK	cmyk(69.2%, 59.3%, 0%, 64.3%)
CIE-LAB	lab(17.11, 15.80, -33.70)
CIE-LCH	lch(17.11, 37.22, 295.12°)
OKLab	oklab(29.15% 0.0032 -0.0968)
OKLCH	oklch(29.15% 0.097 271.9)
XYZ	xyz(3.0282, 2.3251, 10.1847)
Luminance	0.0232 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C255B #5B521C

analogous

#1C445B #1C255B #321C5B

triadic

#1C255B #5B1C25 #255B1C

tetradic

#1C255B #5B1C44 #5B521C #1C5B32

square

#1C255B #5B1C44 #5B521C #1C5B32

split-complementary

#1C255B #5B321C #445B1C

monochromatic

#070A17 #0E122C #1C255B #2A388A #394BB9

Accessibility & contrast

On white

14.33

#1C255B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#1C255B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C255B

14.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C255B	#FFFFFF	#000000	##FFFFFF
##1C255B	1.00	14.33	1.47	14.33
#FFFFFF	14.33	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D5D

Deuteranopia (green-blind)

#00275A

Tritanopia (blue-blind)

#00323C

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #1c255b;
/* rgb */ color: rgb(28, 37, 91);
/* oklch */ color: oklch(29.1% 0.097 271.9);

Tailwind

colors: {
  custom: {
    50: '#605f8a',
    500: '#1c255b',
    950: '#000000',
  },
}

SCSS

$custom: #1c255b;
$custom-light: #605f8a;
$custom-dark: #000000;

JSON

{
  "hex": "#1c255b",
  "rgb": {
    "r": 28,
    "g": 37,
    "b": 91
  },
  "hsl": {
    "h": 231.429,
    "s": 52.941,
    "l": 23.333
  },
  "oklch": {
    "l": 0.2915,
    "c": 0.0969,
    "h": 271.9
  },
  "luminance": 0.02325
}

Semantic roles & 50–950 ramp

primary

#1C255B

secondary

#908542

accent

#C84BDC

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05040C

muted

#79797D

Preview Lab

Preview with #1C255B

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

Preview Lab → · Contrast checker → · Palette generator →