#1F278C#1F278C

#1F278C is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.5% C 0.164 H 270.8°. Best body text is #FFFFFF at 12.16:1 contrast (WCAG AA passes).

Color values

HEX	#1F278C
RGB	rgb(31, 39, 140)
HSL	hsl(236, 64%, 34%)
HSV	hsv(236, 78%, 55%)
CMYK	cmyk(77.9%, 72.1%, 0%, 45.1%)
CIE-LAB	lab(22.43, 33.70, -56.53)
CIE-LCH	lch(22.43, 65.81, 300.81°)
OKLab	oklab(34.52% 0.0024 -0.1636)
OKLCH	oklch(34.52% 0.164 270.8)
XYZ	xyz(6.0226, 3.6351, 25.1901)
Luminance	0.0364 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F278C #8C841F

analogous

#1F5D8C #1F278C #4D1F8C

triadic

#1F278C #8C1F27 #278C1F

tetradic

#1F278C #8C1F5D #8C841F #1F8C4D

square

#1F278C #8C1F5D #8C841F #1F8C4D

split-complementary

#1F278C #8C4D1F #5D8C1F

monochromatic

#090B28 #14195A #1F278C #2A35BE #4E58D8

Accessibility & contrast

On white

12.16

#1F278C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#1F278C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F278C

12.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F278C	#FFFFFF	#000000	##FFFFFF
##1F278C	1.00	12.16	1.73	12.16
#FFFFFF	12.16	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B8F

Deuteranopia (green-blind)

#00308A

Tritanopia (blue-blind)

#004356

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1f278c;
/* rgb */ color: rgb(31, 39, 140);
/* oklch */ color: oklch(34.5% 0.164 270.8);

Tailwind

colors: {
  custom: {
    50: '#6e62af',
    500: '#1f278c',
    950: '#000000',
  },
}

SCSS

$custom: #1f278c;
$custom-light: #6e62af;
$custom-dark: #000000;

JSON

{
  "hex": "#1f278c",
  "rgb": {
    "r": 31,
    "g": 39,
    "b": 140
  },
  "hsl": {
    "h": 235.596,
    "s": 63.743,
    "l": 33.529
  },
  "oklch": {
    "l": 0.34517,
    "c": 0.16364,
    "h": 270.8
  },
  "luminance": 0.03636
}

Semantic roles & 50–950 ramp

primary

#1F278C

secondary

#BBB24C

accent

#DB41E7

background

#F7F5FA

surface

#EDEAF5

border

#C8C6CF

text

#080510

muted

#7B797F

Preview Lab

Preview with #1F278C

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

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