#1F276D#1F276D

#1F276D is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.4% C 0.121 H 272.4°. Best body text is #FFFFFF at 13.38:1 contrast (WCAG AA passes).

Color values

HEX	#1F276D
RGB	rgb(31, 39, 109)
HSL	hsl(234, 56%, 27%)
HSV	hsv(234, 72%, 43%)
CMYK	cmyk(71.6%, 64.2%, 0%, 57.3%)
CIE-LAB	lab(19.42, 21.98, -41.77)
CIE-LCH	lch(19.42, 47.20, 297.75°)
OKLab	oklab(31.4% 0.005 -0.1205)
OKLCH	oklch(31.4% 0.121 272.4)
XYZ	xyz(4.0500, 2.8461, 14.8009)
Luminance	0.0285 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F276D #6D651F

analogous

#1F4E6D #1F276D #3E1F6D

triadic

#1F276D #6D1F27 #276D1F

tetradic

#1F276D #6D1F4E #6D651F #1F6D3E

square

#1F276D #6D1F4E #6D651F #1F6D3E

split-complementary

#1F276D #6D3E1F #4E6D1F

monochromatic

#070918 #11163D #1F276D #2D389D #3E4CC8

Accessibility & contrast

On white

13.38

#1F276D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#1F276D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F276D

13.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F276D	#FFFFFF	#000000	##FFFFFF
##1F276D	1.00	13.38	1.57	13.38
#FFFFFF	13.38	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00336F

Deuteranopia (green-blind)

#002C6C

Tritanopia (blue-blind)

#003946

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1f276d;
/* rgb */ color: rgb(31, 39, 109);
/* oklch */ color: oklch(31.4% 0.121 272.4);

Tailwind

colors: {
  custom: {
    50: '#666197',
    500: '#1f276d',
    950: '#000000',
  },
}

SCSS

$custom: #1f276d;
$custom-light: #666197;
$custom-dark: #000000;

JSON

{
  "hex": "#1f276d",
  "rgb": {
    "r": 31,
    "g": 39,
    "b": 109
  },
  "hsl": {
    "h": 233.846,
    "s": 55.714,
    "l": 27.451
  },
  "oklch": {
    "l": 0.31404,
    "c": 0.12056,
    "h": 272.4
  },
  "luminance": 0.02846
}

Semantic roles & 50–950 ramp

primary

#1F276D

secondary

#A19847

accent

#D049DF

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06050E

muted

#7A797E

Preview Lab

Preview with #1F276D

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

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