#1F276C#1F276C

#1F276C is a dark, moderate blue. Relative luminance 0.028; OKLCH L 31.3% C 0.119 H 272.4°. Best body text is #FFFFFF at 13.42:1 contrast (WCAG AA passes).

Color values

HEX	#1F276C
RGB	rgb(31, 39, 108)
HSL	hsl(234, 55%, 27%)
HSV	hsv(234, 71%, 42%)
CMYK	cmyk(71.3%, 63.9%, 0%, 57.6%)
CIE-LAB	lab(19.33, 21.59, -41.27)
CIE-LCH	lch(19.33, 46.58, 297.62°)
OKLab	oklab(31.31% 0.0051 -0.119)
OKLCH	oklch(31.31% 0.119 272.4)
XYZ	xyz(3.9965, 2.8247, 14.5191)
Luminance	0.0283 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F276C #6C641F

analogous

#1F4E6C #1F276C #3D1F6C

triadic

#1F276C #6C1F27 #276C1F

tetradic

#1F276C #6C1F4E #6C641F #1F6C3D

square

#1F276C #6C1F4E #6C641F #1F6C3D

split-complementary

#1F276C #6C3D1F #4E6C1F

monochromatic

#070918 #11163C #1F276C #2D389C #3E4CC8

Accessibility & contrast

On white

13.42

#1F276C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#1F276C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F276C

13.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F276C	#FFFFFF	#000000	##FFFFFF
##1F276C	1.00	13.42	1.57	13.42
#FFFFFF	13.42	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00326E

Deuteranopia (green-blind)

#002B6B

Tritanopia (blue-blind)

#003845

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1f276c;
/* rgb */ color: rgb(31, 39, 108);
/* oklch */ color: oklch(31.3% 0.119 272.4);

Tailwind

colors: {
  custom: {
    50: '#666197',
    500: '#1f276c',
    950: '#000000',
  },
}

SCSS

$custom: #1f276c;
$custom-light: #666197;
$custom-dark: #000000;

JSON

{
  "hex": "#1f276c",
  "rgb": {
    "r": 31,
    "g": 39,
    "b": 108
  },
  "hsl": {
    "h": 233.766,
    "s": 55.396,
    "l": 27.255
  },
  "oklch": {
    "l": 0.3131,
    "c": 0.11909,
    "h": 272.4
  },
  "luminance": 0.02825
}

Semantic roles & 50–950 ramp

primary

#1F276C

secondary

#A09747

accent

#CF49DF

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06050D

muted

#7A797E

Preview Lab

Preview with #1F276C

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

Preview Lab → · Contrast checker → · Palette generator →