#1F276F#1F276F

#1F276F is a dark, vivid blue. Relative luminance 0.029; OKLCH L 31.6% C 0.123 H 272.3°. Best body text is #FFFFFF at 13.31:1 contrast (WCAG AA passes).

Color values

HEX	#1F276F
RGB	rgb(31, 39, 111)
HSL	hsl(234, 56%, 28%)
HSV	hsv(234, 72%, 44%)
CMYK	cmyk(72.1%, 64.9%, 0%, 56.5%)
CIE-LAB	lab(19.60, 22.76, -42.77)
CIE-LCH	lch(19.60, 48.45, 298.02°)
OKLab	oklab(31.59% 0.005 -0.1234)
OKLCH	oklch(31.59% 0.124 272.3)
XYZ	xyz(4.1589, 2.8896, 15.3744)
Luminance	0.0289 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F276F #6F671F

analogous

#1F4F6F #1F276F #3F1F6F

triadic

#1F276F #6F1F27 #276F1F

tetradic

#1F276F #6F1F4F #6F671F #1F6F3F

square

#1F276F #6F1F4F #6F671F #1F6F3F

split-complementary

#1F276F #6F3F1F #4F6F1F

monochromatic

#070818 #12163F #1F276F #2C389F #3F4DC9

Accessibility & contrast

On white

13.31

#1F276F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#1F276F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F276F

13.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F276F	#FFFFFF	#000000	##FFFFFF
##1F276F	1.00	13.31	1.58	13.31
#FFFFFF	13.31	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003371

Deuteranopia (green-blind)

#002C6E

Tritanopia (blue-blind)

#003947

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1f276f;
/* rgb */ color: rgb(31, 39, 111);
/* oklch */ color: oklch(31.6% 0.123 272.3);

Tailwind

colors: {
  custom: {
    50: '#666199',
    500: '#1f276f',
    950: '#000000',
  },
}

SCSS

$custom: #1f276f;
$custom-light: #666199;
$custom-dark: #000000;

JSON

{
  "hex": "#1f276f",
  "rgb": {
    "r": 31,
    "g": 39,
    "b": 111
  },
  "hsl": {
    "h": 234,
    "s": 56.338,
    "l": 27.843
  },
  "oklch": {
    "l": 0.31592,
    "c": 0.1235,
    "h": 272.3
  },
  "luminance": 0.0289
}

Semantic roles & 50–950 ramp

primary

#1F276F

secondary

#A39A47

accent

#D048E0

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07050E

muted

#7A797E

Preview Lab

Preview with #1F276F

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

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