#1F236A#1F236A

#1F236A is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.3% C 0.122 H 274.1°. Best body text is #FFFFFF at 13.94:1 contrast (WCAG AA passes).

Color values

HEX	#1F236A
RGB	rgb(31, 35, 106)
HSL	hsl(237, 55%, 27%)
HSV	hsv(237, 71%, 42%)
CMYK	cmyk(70.8%, 67%, 0%, 58.4%)
CIE-LAB	lab(18.07, 23.62, -42.02)
CIE-LCH	lch(18.07, 48.20, 299.34°)
OKLab	oklab(30.33% 0.0086 -0.1212)
OKLCH	oklch(30.33% 0.122 274.1)
XYZ	xyz(3.7668, 2.5336, 13.9234)
Luminance	0.0253 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F236A #6A661F

analogous

#1F496A #1F236A #411F6A

triadic

#1F236A #6A1F23 #236A1F

tetradic

#1F236A #6A1F49 #6A661F #1F6A41

square

#1F236A #6A1F49 #6A661F #1F6A41

split-complementary

#1F236A #6A411F #496A1F

monochromatic

#070818 #11133B #1F236A #2D3399 #3D44C6

Accessibility & contrast

On white

13.94

#1F236A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#1F236A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F236A

13.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F236A	#FFFFFF	#000000	##FFFFFF
##1F236A	1.00	13.94	1.51	13.94
#FFFFFF	13.94	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00306C

Deuteranopia (green-blind)

#002969

Tritanopia (blue-blind)

#003543

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1f236a;
/* rgb */ color: rgb(31, 35, 106);
/* oklch */ color: oklch(30.3% 0.122 274.1);

Tailwind

colors: {
  custom: {
    50: '#665e95',
    500: '#1f236a',
    950: '#000000',
  },
}

SCSS

$custom: #1f236a;
$custom-light: #665e95;
$custom-dark: #000000;

JSON

{
  "hex": "#1f236a",
  "rgb": {
    "r": 31,
    "g": 35,
    "b": 106
  },
  "hsl": {
    "h": 236.8,
    "s": 54.745,
    "l": 26.863
  },
  "oklch": {
    "l": 0.30328,
    "c": 0.12153,
    "h": 274.1
  },
  "luminance": 0.02534
}

Semantic roles & 50–950 ramp

primary

#1F236A

secondary

#9E9A47

accent

#D64ADE

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040D

muted

#7A797E

Preview Lab

Preview with #1F236A

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

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