#1F136D#1F136D

#1F136D is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.0% C 0.144 H 277.7°. Best body text is #FFFFFF at 15.30:1 contrast (WCAG AA passes).

Color values

HEX	#1F136D
RGB	rgb(31, 19, 109)
HSL	hsl(248, 70%, 25%)
HSV	hsv(248, 83%, 43%)
CMYK	cmyk(71.6%, 82.6%, 0%, 57.3%)
CIE-LAB	lab(14.74, 34.75, -49.45)
CIE-LCH	lch(14.74, 60.44, 305.10°)
OKLab	oklab(28.04% 0.0192 -0.1429)
OKLCH	oklch(28.04% 0.144 277.7)
XYZ	xyz(3.5574, 1.8609, 14.6367)
Luminance	0.0186 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F136D #616D13

analogous

#13346D #1F136D #4C136D

triadic

#1F136D #6D1F13 #136D1F

tetradic

#1F136D #6D1334 #616D13 #136D4C

square

#1F136D #6D1334 #616D13 #136D4C

split-complementary

#1F136D #6D4C13 #346D13

monochromatic

#07051A #100A39 #1F136D #2E1CA1 #3D25D5

Accessibility & contrast

On white

15.30

#1F136D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#1F136D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F136D

15.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F136D	#FFFFFF	#000000	##FFFFFF
##1F136D	1.00	15.30	1.37	15.30
#FFFFFF	15.30	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002970

Deuteranopia (green-blind)

#00216B

Tritanopia (blue-blind)

#002E40

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #1f136d;
/* rgb */ color: rgb(31, 19, 109);
/* oklch */ color: oklch(28.0% 0.144 277.7);

Tailwind

colors: {
  custom: {
    50: '#685398',
    500: '#1f136d',
    950: '#000000',
  },
}

SCSS

$custom: #1f136d;
$custom-light: #685398;
$custom-dark: #000000;

JSON

{
  "hex": "#1f136d",
  "rgb": {
    "r": 31,
    "g": 19,
    "b": 109
  },
  "hsl": {
    "h": 248,
    "s": 70.313,
    "l": 25.098
  },
  "oklch": {
    "l": 0.28039,
    "c": 0.14418,
    "h": 277.7
  },
  "luminance": 0.01861
}

Semantic roles & 50–950 ramp

primary

#1F136D

secondary

#96A438

accent

#ED3BD5

background

#F6F4F9

surface

#EBE7F2

border

#C6C3CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1F136D

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

Preview Lab → · Contrast checker → · Palette generator →