#1F285E#1F285E

#1F285E is a dark, moderate blue. Relative luminance 0.026; OKLCH L 30.3% C 0.096 H 272.2°. Best body text is #FFFFFF at 13.78:1 contrast (WCAG AA passes).

Color values

HEX	#1F285E
RGB	rgb(31, 40, 94)
HSL	hsl(231, 50%, 25%)
HSV	hsv(231, 67%, 37%)
CMYK	cmyk(67%, 57.4%, 0%, 63.1%)
CIE-LAB	lab(18.44, 15.39, -33.53)
CIE-LCH	lch(18.44, 36.90, 294.65°)
OKLab	oklab(30.28% 0.0038 -0.0962)
OKLCH	oklch(30.28% 0.096 272.2)
XYZ	xyz(3.3436, 2.6168, 10.9164)
Luminance	0.0262 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F285E #5E551F

analogous

#1F485E #1F285E #361F5E

triadic

#1F285E #5E1F28 #285E1F

tetradic

#1F285E #5E1F48 #5E551F #1F5E36

square

#1F285E #5E1F48 #5E551F #1F5E36

split-complementary

#1F285E #5E361F #485E1F

monochromatic

#080A17 #101430 #1F285E #2E3C8C #3D4FBA

Accessibility & contrast

On white

13.78

#1F285E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#1F285E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F285E

13.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F285E	#FFFFFF	#000000	##FFFFFF
##1F285E	1.00	13.78	1.52	13.78
#FFFFFF	13.78	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#053060

Deuteranopia (green-blind)

#002A5D

Tritanopia (blue-blind)

#00353E

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1f285e;
/* rgb */ color: rgb(31, 40, 94);
/* oklch */ color: oklch(30.3% 0.096 272.2);

Tailwind

colors: {
  custom: {
    50: '#62618c',
    500: '#1f285e',
    950: '#000000',
  },
}

SCSS

$custom: #1f285e;
$custom-light: #62618c;
$custom-dark: #000000;

JSON

{
  "hex": "#1f285e",
  "rgb": {
    "r": 31,
    "g": 40,
    "b": 94
  },
  "hsl": {
    "h": 231.429,
    "s": 50.4,
    "l": 24.51
  },
  "oklch": {
    "l": 0.30278,
    "c": 0.0963,
    "h": 272.2
  },
  "luminance": 0.02617
}

Semantic roles & 50–950 ramp

primary

#1F285E

secondary

#938846

accent

#C64EDA

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06050C

muted

#7A797D

Preview Lab

Preview with #1F285E

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

Preview Lab → · Contrast checker → · Palette generator →