#1B425F#1B425F

#1B425F is a dark, moderate cyan. Relative luminance 0.050; OKLCH L 36.6% C 0.067 H 243.6°. Best body text is #FFFFFF at 10.55:1 contrast (WCAG AA passes).

Color values

HEX	#1B425F
RGB	rgb(27, 66, 95)
HSL	hsl(206, 56%, 24%)
HSV	hsv(206, 72%, 37%)
CMYK	cmyk(71.6%, 30.5%, 0%, 62.7%)
CIE-LAB	lab(26.61, -3.24, -21.20)
CIE-LCH	lch(26.61, 21.45, 261.32°)
OKLab	oklab(36.56% -0.0296 -0.0598)
OKLCH	oklch(36.56% 0.067 243.6)
XYZ	xyz(4.4650, 4.9552, 11.5454)
Luminance	0.0496 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B425F #5F381B

analogous

#1B5F5A #1B425F #1B205F

triadic

#1B425F #5F1B42 #425F1B

tetradic

#1B425F #5A1B5F #5F381B #205F1B

square

#1B425F #5A1B5F #5F381B #205F1B

split-complementary

#1B425F #5F1B20 #5F5A1B

monochromatic

#071118 #0D212F #1B425F #29638F #3684BE

Accessibility & contrast

On white

10.55

#1B425F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#1B425F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B425F

10.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B425F	#FFFFFF	#000000	##FFFFFF
##1B425F	1.00	10.55	1.99	10.55
#FFFFFF	10.55	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#354360

Deuteranopia (green-blind)

#2C3C5E

Tritanopia (blue-blind)

#00494C

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1b425f;
/* rgb */ color: rgb(27, 66, 95);
/* oklch */ color: oklch(36.6% 0.067 243.6);

Tailwind

colors: {
  custom: {
    50: '#60768c',
    500: '#1b425f',
    950: '#000000',
  },
}

SCSS

$custom: #1b425f;
$custom-light: #60768c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b425f",
  "rgb": {
    "r": 27,
    "g": 66,
    "b": 95
  },
  "hsl": {
    "h": 205.588,
    "s": 55.738,
    "l": 23.922
  },
  "oklch": {
    "l": 0.36558,
    "c": 0.06676,
    "h": 243.6
  },
  "luminance": 0.04956
}

Semantic roles & 50–950 ramp

primary

#1B425F

secondary

#956541

accent

#8949DF

background

#F5F7F8

surface

#EAEDF0

border

#C6C8CB

text

#05080C

muted

#797B7D

Preview Lab

Preview with #1B425F

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

Preview Lab → · Contrast checker → · Palette generator →