#1F276B#1F276B

#1F276B is a dark, moderate blue. Relative luminance 0.028; OKLCH L 31.2% C 0.118 H 272.5°. Best body text is #FFFFFF at 13.45:1 contrast (WCAG AA passes).

Color values

HEX	#1F276B
RGB	rgb(31, 39, 107)
HSL	hsl(234, 55%, 27%)
HSV	hsv(234, 71%, 42%)
CMYK	cmyk(71%, 63.6%, 0%, 58%)
CIE-LAB	lab(19.24, 21.20, -40.76)
CIE-LCH	lch(19.24, 45.95, 297.48°)
OKLab	oklab(31.22% 0.0051 -0.1175)
OKLCH	oklch(31.22% 0.118 272.5)
XYZ	xyz(3.9435, 2.8035, 14.2404)
Luminance	0.0280 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F276B #6B631F

analogous

#1F4D6B #1F276B #3D1F6B

triadic

#1F276B #6B1F27 #276B1F

tetradic

#1F276B #6B1F4D #6B631F #1F6B3D

square

#1F276B #6B1F4D #6B631F #1F6B3D

split-complementary

#1F276B #6B3D1F #4D6B1F

monochromatic

#070918 #11163C #1F276B #2D389A #3D4CC7

Accessibility & contrast

On white

13.45

#1F276B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1F276B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F276B

13.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F276B	#FFFFFF	#000000	##FFFFFF
##1F276B	1.00	13.45	1.56	13.45
#FFFFFF	13.45	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00326D

Deuteranopia (green-blind)

#002B6A

Tritanopia (blue-blind)

#003845

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1f276b;
/* rgb */ color: rgb(31, 39, 107);
/* oklch */ color: oklch(31.2% 0.118 272.5);

Tailwind

colors: {
  custom: {
    50: '#656196',
    500: '#1f276b',
    950: '#000000',
  },
}

SCSS

$custom: #1f276b;
$custom-light: #656196;
$custom-dark: #000000;

JSON

{
  "hex": "#1f276b",
  "rgb": {
    "r": 31,
    "g": 39,
    "b": 107
  },
  "hsl": {
    "h": 233.684,
    "s": 55.072,
    "l": 27.059
  },
  "oklch": {
    "l": 0.31217,
    "c": 0.1176,
    "h": 272.5
  },
  "luminance": 0.02804
}

Semantic roles & 50–950 ramp

primary

#1F276B

secondary

#9F9647

accent

#CF49DE

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06050D

muted

#7A797E

Preview Lab

Preview with #1F276B

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

Preview Lab → · Contrast checker → · Palette generator →