#1F2A90#1F2A90

#1F2A90 is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.4% C 0.166 H 270.1°. Best body text is #FFFFFF at 11.72:1 contrast (WCAG AA passes).

Color values

HEX	#1F2A90
RGB	rgb(31, 42, 144)
HSL	hsl(234, 65%, 34%)
HSV	hsv(234, 78%, 56%)
CMYK	cmyk(78.5%, 70.8%, 0%, 43.5%)
CIE-LAB	lab(23.54, 33.26, -57.18)
CIE-LCH	lch(23.54, 66.15, 300.18°)
OKLab	oklab(35.44% 0.0003 -0.1655)
OKLCH	oklch(35.44% 0.166 270.1)
XYZ	xyz(6.4254, 3.9601, 26.8059)
Luminance	0.0396 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2A90 #90851F

analogous

#1F6390 #1F2A90 #4D1F90

triadic

#1F2A90 #901F2A #2A901F

tetradic

#1F2A90 #901F63 #90851F #1F904D

square

#1F2A90 #901F63 #90851F #1F904D

split-complementary

#1F2A90 #904D1F #63901F

monochromatic

#090D2B #141B5E #1F2A90 #2A39C2 #505DD9

Accessibility & contrast

On white

11.72

#1F2A90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#1F2A90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2A90

11.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2A90	#FFFFFF	#000000	##FFFFFF
##1F2A90	1.00	11.72	1.79	11.72
#FFFFFF	11.72	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E93

Deuteranopia (green-blind)

#00338E

Tritanopia (blue-blind)

#004659

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1f2a90;
/* rgb */ color: rgb(31, 42, 144);
/* oklch */ color: oklch(35.4% 0.166 270.1);

Tailwind

colors: {
  custom: {
    50: '#6f64b2',
    500: '#1f2a90',
    950: '#000000',
  },
}

SCSS

$custom: #1f2a90;
$custom-light: #6f64b2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2a90",
  "rgb": {
    "r": 31,
    "g": 42,
    "b": 144
  },
  "hsl": {
    "h": 234.159,
    "s": 64.571,
    "l": 34.314
  },
  "oklch": {
    "l": 0.35444,
    "c": 0.16553,
    "h": 270.1
  },
  "luminance": 0.03961
}

Semantic roles & 50–950 ramp

primary

#1F2A90

secondary

#BCB24E

accent

#D740E8

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090511

muted

#7B7A80

Preview Lab

Preview with #1F2A90

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

Preview Lab → · Contrast checker → · Palette generator →