#1F455F#1F455F

#1F455F is a dark, moderate cyan. Relative luminance 0.054; OKLCH L 37.5% C 0.062 H 241.0°. Best body text is #FFFFFF at 10.12:1 contrast (WCAG AA passes).

Color values

HEX	#1F455F
RGB	rgb(31, 69, 95)
HSL	hsl(204, 51%, 25%)
HSV	hsv(204, 67%, 37%)
CMYK	cmyk(67.4%, 27.4%, 0%, 62.7%)
CIE-LAB	lab(27.77, -4.40, -19.37)
CIE-LCH	lch(27.77, 19.86, 257.20°)
OKLab	oklab(37.53% -0.0301 -0.0544)
OKLCH	oklch(37.53% 0.062 241)
XYZ	xyz(4.7580, 5.3733, 11.6107)
Luminance	0.0537 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F455F #5F391F

analogous

#1F5F59 #1F455F #1F255F

triadic

#1F455F #5F1F45 #455F1F

tetradic

#1F455F #591F5F #5F391F #255F1F

square

#1F455F #591F5F #5F391F #255F1F

split-complementary

#1F455F #5F1F25 #5F591F

monochromatic

#081117 #102331 #1F455F #2E678D #3D88BB

Accessibility & contrast

On white

10.12

#1F455F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#1F455F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F455F

10.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F455F	#FFFFFF	#000000	##FFFFFF
##1F455F	1.00	10.12	2.07	10.12
#FFFFFF	10.12	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#394560

Deuteranopia (green-blind)

#313F5F

Tritanopia (blue-blind)

#004B4E

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1f455f;
/* rgb */ color: rgb(31, 69, 95);
/* oklch */ color: oklch(37.5% 0.062 241.0);

Tailwind

colors: {
  custom: {
    50: '#62788c',
    500: '#1f455f',
    950: '#000000',
  },
}

SCSS

$custom: #1f455f;
$custom-light: #62788c;
$custom-dark: #000000;

JSON

{
  "hex": "#1f455f",
  "rgb": {
    "r": 31,
    "g": 69,
    "b": 95
  },
  "hsl": {
    "h": 204.375,
    "s": 50.794,
    "l": 24.706
  },
  "oklch": {
    "l": 0.37525,
    "c": 0.06222,
    "h": 241
  },
  "luminance": 0.05374
}

Semantic roles & 50–950 ramp

primary

#1F455F

secondary

#946646

accent

#874EDA

background

#F6F7F8

surface

#EBEDF0

border

#C6C8CB

text

#05090C

muted

#7A7B7D

Preview Lab

Preview with #1F455F

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

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