#1F276A#1F276A

#1F276A is a dark, moderate blue. Relative luminance 0.028; OKLCH L 31.1% C 0.116 H 272.5°. Best body text is #FFFFFF at 13.49:1 contrast (WCAG AA passes).

Color values

HEX	#1F276A
RGB	rgb(31, 39, 106)
HSL	hsl(234, 55%, 27%)
HSV	hsv(234, 71%, 42%)
CMYK	cmyk(70.8%, 63.2%, 0%, 58.4%)
CIE-LAB	lab(19.15, 20.81, -40.26)
CIE-LCH	lch(19.15, 45.32, 297.34°)
OKLab	oklab(31.13% 0.0051 -0.116)
OKLCH	oklch(31.13% 0.116 272.5)
XYZ	xyz(3.8912, 2.7826, 13.9649)
Luminance	0.0278 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F276A #6A621F

analogous

#1F4D6A #1F276A #3D1F6A

triadic

#1F276A #6A1F27 #276A1F

tetradic

#1F276A #6A1F4D #6A621F #1F6A3D

square

#1F276A #6A1F4D #6A621F #1F6A3D

split-complementary

#1F276A #6A3D1F #4D6A1F

monochromatic

#070918 #11163B #1F276A #2D3899 #3D4CC6

Accessibility & contrast

On white

13.49

#1F276A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1F276A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F276A

13.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F276A	#FFFFFF	#000000	##FFFFFF
##1F276A	1.00	13.49	1.56	13.49
#FFFFFF	13.49	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00326C

Deuteranopia (green-blind)

#002B69

Tritanopia (blue-blind)

#003844

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1f276a;
/* rgb */ color: rgb(31, 39, 106);
/* oklch */ color: oklch(31.1% 0.116 272.5);

Tailwind

colors: {
  custom: {
    50: '#656195',
    500: '#1f276a',
    950: '#000000',
  },
}

SCSS

$custom: #1f276a;
$custom-light: #656195;
$custom-dark: #000000;

JSON

{
  "hex": "#1f276a",
  "rgb": {
    "r": 31,
    "g": 39,
    "b": 106
  },
  "hsl": {
    "h": 233.6,
    "s": 54.745,
    "l": 26.863
  },
  "oklch": {
    "l": 0.31125,
    "c": 0.11611,
    "h": 272.5
  },
  "luminance": 0.02783
}

Semantic roles & 50–950 ramp

primary

#1F276A

secondary

#9E9547

accent

#CE4ADE

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06050D

muted

#7A797E

Preview Lab

Preview with #1F276A

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

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