#1C237A#1C237A

#1C237A is a dark, vivid blue. Relative luminance 0.029; OKLCH L 31.8% C 0.145 H 271.4°. Best body text is #FFFFFF at 13.37:1 contrast (WCAG AA passes).

Color values

HEX	#1C237A
RGB	rgb(28, 35, 122)
HSL	hsl(236, 63%, 29%)
HSV	hsv(236, 77%, 48%)
CMYK	cmyk(77%, 71.3%, 0%, 52.2%)
CIE-LAB	lab(19.45, 29.31, -50.09)
CIE-LCH	lch(19.45, 58.03, 300.33°)
OKLab	oklab(31.76% 0.0035 -0.1449)
OKLCH	oklch(31.76% 0.145 271.4)
XYZ	xyz(4.5916, 2.8536, 18.7174)
Luminance	0.0285 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C237A #7A731C

analogous

#1C527A #1C237A #441C7A

triadic

#1C237A #7A1C23 #237A1C

tetradic

#1C237A #7A1C52 #7A731C #1C7A44

square

#1C237A #7A1C52 #7A731C #1C7A44

split-complementary

#1C237A #7A441C #527A1C

monochromatic

#060719 #111548 #1C237A #2731AC #3E49D3

Accessibility & contrast

On white

13.37

#1C237A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#1C237A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C237A

13.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C237A	#FFFFFF	#000000	##FFFFFF
##1C237A	1.00	13.37	1.57	13.37
#FFFFFF	13.37	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00347D

Deuteranopia (green-blind)

#002B78

Tritanopia (blue-blind)

#003B4B

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1c237a;
/* rgb */ color: rgb(28, 35, 122);
/* oklch */ color: oklch(31.8% 0.145 271.4);

Tailwind

colors: {
  custom: {
    50: '#695ea1',
    500: '#1c237a',
    950: '#000000',
  },
}

SCSS

$custom: #1c237a;
$custom-light: #695ea1;
$custom-dark: #000000;

JSON

{
  "hex": "#1c237a",
  "rgb": {
    "r": 28,
    "g": 35,
    "b": 122
  },
  "hsl": {
    "h": 235.532,
    "s": 62.667,
    "l": 29.412
  },
  "oklch": {
    "l": 0.3176,
    "c": 0.14495,
    "h": 271.4
  },
  "luminance": 0.02854
}

Semantic roles & 50–950 ramp

primary

#1C237A

secondary

#AEA644

accent

#DA42E6

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1C237A

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

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