#1F279D#1F279D

#1F279D is a dark, vivid blue. Relative luminance 0.042; OKLCH L 36.4% C 0.185 H 270.0°. Best body text is #FFFFFF at 11.44:1 contrast (WCAG AA passes).

Color values

HEX	#1F279D
RGB	rgb(31, 39, 157)
HSL	hsl(236, 67%, 37%)
HSV	hsv(236, 80%, 62%)
CMYK	cmyk(80.3%, 75.2%, 0%, 38.4%)
CIE-LAB	lab(24.24, 39.79, -64.01)
CIE-LCH	lch(24.24, 75.37, 301.86°)
OKLab	oklab(36.36% -0.0001 -0.1854)
OKLCH	oklch(36.36% 0.185 270)
XYZ	xyz(7.3743, 4.1758, 32.3091)
Luminance	0.0418 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F279D #9D951F

analogous

#1F669D #1F279D #561F9D

triadic

#1F279D #9D1F27 #279D1F

tetradic

#1F279D #9D1F66 #9D951F #1F9D56

square

#1F279D #9D1F66 #9D951F #1F9D56

split-complementary

#1F279D #9D561F #669D1F

monochromatic

#0B0E37 #151A6A #1F279D #2934D0 #5861DE

Accessibility & contrast

On white

11.44

#1F279D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#1F279D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F279D

11.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F279D	#FFFFFF	#000000	##FFFFFF
##1F279D	1.00	11.44	1.84	11.44
#FFFFFF	11.44	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040A0

Deuteranopia (green-blind)

#00339B

Tritanopia (blue-blind)

#004A60

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1f279d;
/* rgb */ color: rgb(31, 39, 157);
/* oklch */ color: oklch(36.4% 0.185 270.0);

Tailwind

colors: {
  custom: {
    50: '#7262bb',
    500: '#1f279d',
    950: '#000000',
  },
}

SCSS

$custom: #1f279d;
$custom-light: #7262bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1f279d",
  "rgb": {
    "r": 31,
    "g": 39,
    "b": 157
  },
  "hsl": {
    "h": 236.19,
    "s": 67.021,
    "l": 36.863
  },
  "oklch": {
    "l": 0.3636,
    "c": 0.18541,
    "h": 270
  },
  "luminance": 0.04177
}

Semantic roles & 50–950 ramp

primary

#1F279D

secondary

#C2BB56

accent

#DF3EEA

background

#F7F5FB

surface

#EEEAF6

border

#C9C6D0

text

#090512

muted

#7B7981

Preview Lab

Preview with #1F279D

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

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