#1F3263#1F3263

#1F3263 is a dark, moderate blue. Relative luminance 0.035; OKLCH L 33.0% C 0.090 H 265.8°. Best body text is #FFFFFF at 12.39:1 contrast (WCAG AA passes).

Color values

HEX	#1F3263
RGB	rgb(31, 50, 99)
HSL	hsl(223, 52%, 25%)
HSV	hsv(223, 69%, 39%)
CMYK	cmyk(68.7%, 49.5%, 0%, 61.2%)
CIE-LAB	lab(21.85, 10.16, -31.33)
CIE-LCH	lch(21.85, 32.94, 287.97°)
OKLab	oklab(32.98% -0.0066 -0.0896)
OKLCH	oklch(32.98% 0.09 265.8)
XYZ	xyz(3.9570, 3.4730, 12.2638)
Luminance	0.0347 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3263 #63501F

analogous

#1F5463 #1F3263 #2E1F63

triadic

#1F3263 #631F32 #32631F

tetradic

#1F3263 #631F54 #63501F #1F632E

square

#1F3263 #631F54 #63501F #1F632E

split-complementary

#1F3263 #632E1F #54631F

monochromatic

#070C17 #101A34 #1F3263 #2E4A92 #3C61C0

Accessibility & contrast

On white

12.39

#1F3263 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1F3263 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3263

12.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3263	#FFFFFF	#000000	##FFFFFF
##1F3263	1.00	12.39	1.69	12.39
#FFFFFF	12.39	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A3865

Deuteranopia (green-blind)

#0D3162

Tritanopia (blue-blind)

#003D45

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1f3263;
/* rgb */ color: rgb(31, 50, 99);
/* oklch */ color: oklch(33.0% 0.090 265.8);

Tailwind

colors: {
  custom: {
    50: '#636990',
    500: '#1f3263',
    950: '#000000',
  },
}

SCSS

$custom: #1f3263;
$custom-light: #636990;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3263",
  "rgb": {
    "r": 31,
    "g": 50,
    "b": 99
  },
  "hsl": {
    "h": 223.235,
    "s": 52.308,
    "l": 25.49
  },
  "oklch": {
    "l": 0.32982,
    "c": 0.08986,
    "h": 265.8
  },
  "luminance": 0.03473
}

Semantic roles & 50–950 ramp

primary

#1F3263

secondary

#988146

accent

#B44CDC

background

#F6F6F8

surface

#EBEBF0

border

#C6C6CB

text

#06060C

muted

#7A7A7D

Preview Lab

Preview with #1F3263

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

Preview Lab → · Contrast checker → · Palette generator →