#1F375D#1F375D

#1F375D is a dark, moderate blue. Relative luminance 0.038; OKLCH L 33.8% C 0.074 H 259.2°. Best body text is #FFFFFF at 11.91:1 contrast (WCAG AA passes).

Color values

HEX	#1F375D
RGB	rgb(31, 55, 93)
HSL	hsl(217, 50%, 24%)
HSV	hsv(217, 67%, 36%)
CMYK	cmyk(66.7%, 40.9%, 0%, 63.5%)
CIE-LAB	lab(23.05, 4.25, -25.50)
CIE-LCH	lch(23.05, 25.85, 279.46°)
OKLab	oklab(33.78% -0.0138 -0.0724)
OKLCH	oklch(33.78% 0.074 259.2)
XYZ	xyz(3.9063, 3.8136, 10.8840)
Luminance	0.0381 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F375D #5D451F

analogous

#1F565D #1F375D #261F5D

triadic

#1F375D #5D1F37 #375D1F

tetradic

#1F375D #5D1F56 #5D451F #1F5D26

square

#1F375D #5D1F56 #5D451F #1F5D26

split-complementary

#1F375D #5D261F #565D1F

monochromatic

#080E17 #101C2F #1F375D #2E528B #3E6DB9

Accessibility & contrast

On white

11.91

#1F375D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#1F375D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F375D

11.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F375D	#FFFFFF	#000000	##FFFFFF
##1F375D	1.00	11.91	1.76	11.91
#FFFFFF	11.91	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#273A5F

Deuteranopia (green-blind)

#1E345C

Tritanopia (blue-blind)

#004045

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1f375d;
/* rgb */ color: rgb(31, 55, 93);
/* oklch */ color: oklch(33.8% 0.074 259.2);

Tailwind

colors: {
  custom: {
    50: '#616d8b',
    500: '#1f375d',
    950: '#000000',
  },
}

SCSS

$custom: #1f375d;
$custom-light: #616d8b;
$custom-dark: #000000;

JSON

{
  "hex": "#1f375d",
  "rgb": {
    "r": 31,
    "g": 55,
    "b": 93
  },
  "hsl": {
    "h": 216.774,
    "s": 50,
    "l": 24.314
  },
  "oklch": {
    "l": 0.3378,
    "c": 0.07371,
    "h": 259.2
  },
  "luminance": 0.03814
}

Semantic roles & 50–950 ramp

primary

#1F375D

secondary

#927446

accent

#A44EDA

background

#F6F6F8

surface

#EBEBF0

border

#C6C6CB

text

#05070C

muted

#7A7A7D

Preview Lab

Preview with #1F375D

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

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