#1F376C#1F376C

#1F376C is a dark, moderate blue. Relative luminance 0.041; OKLCH L 34.8% C 0.097 H 263.8°. Best body text is #FFFFFF at 11.53:1 contrast (WCAG AA passes).

Color values

HEX	#1F376C
RGB	rgb(31, 55, 108)
HSL	hsl(221, 55%, 27%)
HSV	hsv(221, 71%, 42%)
CMYK	cmyk(71.3%, 49.1%, 0%, 57.6%)
CIE-LAB	lab(24.02, 10.21, -33.68)
CIE-LCH	lch(24.02, 35.19, 286.86°)
OKLab	oklab(34.85% -0.0105 -0.0964)
OKLCH	oklch(34.85% 0.097 263.8)
XYZ	xyz(4.6371, 4.1059, 14.7326)
Luminance	0.0411 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F376C #6C541F

analogous

#1F5E6C #1F376C #2E1F6C

triadic

#1F376C #6C1F37 #376C1F

tetradic

#1F376C #6C1F5E #6C541F #1F6C2E

square

#1F376C #6C1F5E #6C541F #1F6C2E

split-complementary

#1F376C #6C2E1F #5E6C1F

monochromatic

#070C18 #111F3C #1F376C #2D4F9C #3E69C8

Accessibility & contrast

On white

11.53

#1F376C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#1F376C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F376C

11.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F376C	#FFFFFF	#000000	##FFFFFF
##1F376C	1.00	11.53	1.82	11.53
#FFFFFF	11.53	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C3D6E

Deuteranopia (green-blind)

#0C366B

Tritanopia (blue-blind)

#00434C

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1f376c;
/* rgb */ color: rgb(31, 55, 108);
/* oklch */ color: oklch(34.8% 0.097 263.8);

Tailwind

colors: {
  custom: {
    50: '#656d96',
    500: '#1f376c',
    950: '#000000',
  },
}

SCSS

$custom: #1f376c;
$custom-light: #656d96;
$custom-dark: #000000;

JSON

{
  "hex": "#1f376c",
  "rgb": {
    "r": 31,
    "g": 55,
    "b": 108
  },
  "hsl": {
    "h": 221.299,
    "s": 55.396,
    "l": 27.255
  },
  "oklch": {
    "l": 0.34846,
    "c": 0.09699,
    "h": 263.8
  },
  "luminance": 0.04106
}

Semantic roles & 50–950 ramp

primary

#1F376C

secondary

#A08447

accent

#B049DF

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #1F376C

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

Preview Lab → · Contrast checker → · Palette generator →