#1F276E#1F276E

#1F276E is a dark, vivid blue. Relative luminance 0.029; OKLCH L 31.5% C 0.122 H 272.3°. Best body text is #FFFFFF at 13.35:1 contrast (WCAG AA passes).

Color values

HEX	#1F276E
RGB	rgb(31, 39, 110)
HSL	hsl(234, 56%, 28%)
HSV	hsv(234, 72%, 43%)
CMYK	cmyk(71.8%, 64.5%, 0%, 56.9%)
CIE-LAB	lab(19.51, 22.37, -42.27)
CIE-LCH	lch(19.51, 47.83, 297.89°)
OKLab	oklab(31.5% 0.005 -0.1219)
OKLCH	oklch(31.5% 0.122 272.3)
XYZ	xyz(4.1041, 2.8677, 15.0861)
Luminance	0.0287 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F276E #6E661F

analogous

#1F4E6E #1F276E #3E1F6E

triadic

#1F276E #6E1F27 #276E1F

tetradic

#1F276E #6E1F4E #6E661F #1F6E3E

square

#1F276E #6E1F4E #6E661F #1F6E3E

split-complementary

#1F276E #6E3E1F #4E6E1F

monochromatic

#070818 #12163E #1F276E #2C389E #3F4DC9

Accessibility & contrast

On white

13.35

#1F276E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#1F276E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F276E

13.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F276E	#FFFFFF	#000000	##FFFFFF
##1F276E	1.00	13.35	1.57	13.35
#FFFFFF	13.35	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003370

Deuteranopia (green-blind)

#002C6D

Tritanopia (blue-blind)

#003946

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1f276e;
/* rgb */ color: rgb(31, 39, 110);
/* oklch */ color: oklch(31.5% 0.122 272.3);

Tailwind

colors: {
  custom: {
    50: '#666198',
    500: '#1f276e',
    950: '#000000',
  },
}

SCSS

$custom: #1f276e;
$custom-light: #666198;
$custom-dark: #000000;

JSON

{
  "hex": "#1f276e",
  "rgb": {
    "r": 31,
    "g": 39,
    "b": 110
  },
  "hsl": {
    "h": 233.924,
    "s": 56.028,
    "l": 27.647
  },
  "oklch": {
    "l": 0.31498,
    "c": 0.12203,
    "h": 272.3
  },
  "luminance": 0.02868
}

Semantic roles & 50–950 ramp

primary

#1F276E

secondary

#A29947

accent

#D048DF

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06050E

muted

#7A797E

Preview Lab

Preview with #1F276E

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

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