#1F2990#1F2990

#1F2990 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.3% C 0.167 H 270.3°. Best body text is #FFFFFF at 11.81:1 contrast (WCAG AA passes).

Color values

HEX	#1F2990
RGB	rgb(31, 41, 144)
HSL	hsl(235, 65%, 34%)
HSV	hsv(235, 78%, 56%)
CMYK	cmyk(78.5%, 71.5%, 0%, 43.5%)
CIE-LAB	lab(23.30, 33.90, -57.56)
CIE-LCH	lch(23.30, 66.80, 300.49°)
OKLab	oklab(35.27% 0.0008 -0.1666)
OKLCH	oklch(35.27% 0.167 270.3)
XYZ	xyz(6.3903, 3.8901, 26.7942)
Luminance	0.0389 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2990 #90861F

analogous

#1F6290 #1F2990 #4E1F90

triadic

#1F2990 #901F29 #29901F

tetradic

#1F2990 #901F62 #90861F #1F904E

square

#1F2990 #901F62 #90861F #1F904E

split-complementary

#1F2990 #904E1F #62901F

monochromatic

#090C2B #141B5E #1F2990 #2A37C2 #505CD9

Accessibility & contrast

On white

11.81

#1F2990 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1F2990 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2990

11.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2990	#FFFFFF	#000000	##FFFFFF
##1F2990	1.00	11.81	1.78	11.81
#FFFFFF	11.81	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D93

Deuteranopia (green-blind)

#00328E

Tritanopia (blue-blind)

#004659

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1f2990;
/* rgb */ color: rgb(31, 41, 144);
/* oklch */ color: oklch(35.3% 0.167 270.3);

Tailwind

colors: {
  custom: {
    50: '#6f63b2',
    500: '#1f2990',
    950: '#000000',
  },
}

SCSS

$custom: #1f2990;
$custom-light: #6f63b2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2990",
  "rgb": {
    "r": 31,
    "g": 41,
    "b": 144
  },
  "hsl": {
    "h": 234.69,
    "s": 64.571,
    "l": 34.314
  },
  "oklch": {
    "l": 0.35274,
    "c": 0.16665,
    "h": 270.3
  },
  "luminance": 0.03891
}

Semantic roles & 50–950 ramp

primary

#1F2990

secondary

#BCB34E

accent

#D940E8

background

#F7F5FB

surface

#EDEAF6

border

#C8C6D0

text

#090511

muted

#7B7980

Preview Lab

Preview with #1F2990

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

Preview Lab → · Contrast checker → · Palette generator →