#1F2590#1F2590

#1F2590 is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.6% C 0.171 H 270.9°. Best body text is #FFFFFF at 12.17:1 contrast (WCAG AA passes).

Color values

HEX	#1F2590
RGB	rgb(31, 37, 144)
HSL	hsl(237, 65%, 34%)
HSV	hsv(237, 78%, 56%)
CMYK	cmyk(78.5%, 74.3%, 0%, 43.5%)
CIE-LAB	lab(22.40, 36.40, -59.06)
CIE-LCH	lch(22.40, 69.37, 301.65°)
OKLab	oklab(34.62% 0.0028 -0.171)
OKLCH	oklch(34.62% 0.171 270.9)
XYZ	xyz(6.2590, 3.6274, 26.7504)
Luminance	0.0363 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2590 #908A1F

analogous

#1F5E90 #1F2590 #521F90

triadic

#1F2590 #901F25 #25901F

tetradic

#1F2590 #901F5E #908A1F #1F9052

square

#1F2590 #901F5E #908A1F #1F9052

split-complementary

#1F2590 #90521F #5E901F

monochromatic

#090B2B #14185E #1F2590 #2A32C2 #5057D9

Accessibility & contrast

On white

12.17

#1F2590 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#1F2590 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2590

12.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2590	#FFFFFF	#000000	##FFFFFF
##1F2590	1.00	12.17	1.73	12.17
#FFFFFF	12.17	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B93

Deuteranopia (green-blind)

#00308E

Tritanopia (blue-blind)

#004458

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1f2590;
/* rgb */ color: rgb(31, 37, 144);
/* oklch */ color: oklch(34.6% 0.171 270.9);

Tailwind

colors: {
  custom: {
    50: '#6f60b2',
    500: '#1f2590',
    950: '#000000',
  },
}

SCSS

$custom: #1f2590;
$custom-light: #6f60b2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2590",
  "rgb": {
    "r": 31,
    "g": 37,
    "b": 144
  },
  "hsl": {
    "h": 236.814,
    "s": 64.571,
    "l": 34.314
  },
  "oklch": {
    "l": 0.34624,
    "c": 0.17101,
    "h": 270.9
  },
  "luminance": 0.03628
}

Semantic roles & 50–950 ramp

primary

#1F2590

secondary

#BCB74E

accent

#DF40E8

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090511

muted

#7B7980

Preview Lab

Preview with #1F2590

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

Preview Lab → · Contrast checker → · Palette generator →