#1F279C#1F279C

#1F279C is a dark, vivid blue. Relative luminance 0.041; OKLCH L 36.3% C 0.184 H 270.0°. Best body text is #FFFFFF at 11.48:1 contrast (WCAG AA passes).

Color values

HEX	#1F279C
RGB	rgb(31, 39, 156)
HSL	hsl(236, 67%, 37%)
HSV	hsv(236, 80%, 61%)
CMYK	cmyk(80.1%, 75%, 0%, 38.8%)
CIE-LAB	lab(24.13, 39.44, -63.58)
CIE-LCH	lch(24.13, 74.82, 301.81°)
OKLab	oklab(36.25% 0.0001 -0.1842)
OKLCH	oklch(36.25% 0.184 270)
XYZ	xyz(7.2893, 4.1418, 31.8613)
Luminance	0.0414 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F279C #9C941F

analogous

#1F669C #1F279C #561F9C

triadic

#1F279C #9C1F27 #279C1F

tetradic

#1F279C #9C1F66 #9C941F #1F9C56

square

#1F279C #9C1F66 #9C941F #1F9C56

split-complementary

#1F279C #9C561F #669C1F

monochromatic

#0B0D36 #151A69 #1F279C #2934CF #5860DE

Accessibility & contrast

On white

11.48

#1F279C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#1F279C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F279C

11.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F279C	#FFFFFF	#000000	##FFFFFF
##1F279C	1.00	11.48	1.83	11.48
#FFFFFF	11.48	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00409F

Deuteranopia (green-blind)

#00339A

Tritanopia (blue-blind)

#00495F

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1f279c;
/* rgb */ color: rgb(31, 39, 156);
/* oklch */ color: oklch(36.3% 0.184 270.0);

Tailwind

colors: {
  custom: {
    50: '#7262ba',
    500: '#1f279c',
    950: '#000000',
  },
}

SCSS

$custom: #1f279c;
$custom-light: #7262ba;
$custom-dark: #000000;

JSON

{
  "hex": "#1f279c",
  "rgb": {
    "r": 31,
    "g": 39,
    "b": 156
  },
  "hsl": {
    "h": 236.16,
    "s": 66.845,
    "l": 36.667
  },
  "oklch": {
    "l": 0.3625,
    "c": 0.18416,
    "h": 270
  },
  "luminance": 0.04143
}

Semantic roles & 50–950 ramp

primary

#1F279C

secondary

#C1BB55

accent

#DF3EEA

background

#F7F5FB

surface

#EEEAF6

border

#C9C6D0

text

#090512

muted

#7B7981

Preview Lab

Preview with #1F279C

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

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