#1F236C#1F236C

#1F236C is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.5% C 0.124 H 273.9°. Best body text is #FFFFFF at 13.86:1 contrast (WCAG AA passes).

Color values

HEX	#1F236C
RGB	rgb(31, 35, 108)
HSL	hsl(237, 55%, 27%)
HSV	hsv(237, 71%, 42%)
CMYK	cmyk(71.3%, 67.6%, 0%, 57.6%)
CIE-LAB	lab(18.26, 24.38, -43.02)
CIE-LCH	lch(18.26, 49.44, 299.54°)
OKLab	oklab(30.52% 0.0085 -0.1241)
OKLCH	oklch(30.52% 0.124 273.9)
XYZ	xyz(3.8720, 2.5757, 14.4776)
Luminance	0.0258 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F236C #6C681F

analogous

#1F4A6C #1F236C #421F6C

triadic

#1F236C #6C1F23 #236C1F

tetradic

#1F236C #6C1F4A #6C681F #1F6C42

square

#1F236C #6C1F4A #6C681F #1F6C42

split-complementary

#1F236C #6C421F #4A6C1F

monochromatic

#070818 #11143C #1F236C #2D329C #3E45C8

Accessibility & contrast

On white

13.86

#1F236C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#1F236C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F236C

13.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F236C	#FFFFFF	#000000	##FFFFFF
##1F236C	1.00	13.86	1.52	13.86
#FFFFFF	13.86	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00306E

Deuteranopia (green-blind)

#00296B

Tritanopia (blue-blind)

#003644

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1f236c;
/* rgb */ color: rgb(31, 35, 108);
/* oklch */ color: oklch(30.5% 0.124 273.9);

Tailwind

colors: {
  custom: {
    50: '#665e97',
    500: '#1f236c',
    950: '#000000',
  },
}

SCSS

$custom: #1f236c;
$custom-light: #665e97;
$custom-dark: #000000;

JSON

{
  "hex": "#1f236c",
  "rgb": {
    "r": 31,
    "g": 35,
    "b": 108
  },
  "hsl": {
    "h": 236.883,
    "s": 55.396,
    "l": 27.255
  },
  "oklch": {
    "l": 0.30523,
    "c": 0.12443,
    "h": 273.9
  },
  "luminance": 0.02576
}

Semantic roles & 50–950 ramp

primary

#1F236C

secondary

#A09B47

accent

#D749DF

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040D

muted

#7A797E

Preview Lab

Preview with #1F236C

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

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