#1C237F#1C237F

#1C237F is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.3% C 0.152 H 271.1°. Best body text is #FFFFFF at 13.16:1 contrast (WCAG AA passes).

Color values

HEX	#1C237F
RGB	rgb(28, 35, 127)
HSL	hsl(236, 64%, 30%)
HSV	hsv(236, 78%, 50%)
CMYK	cmyk(78%, 72.4%, 0%, 50.2%)
CIE-LAB	lab(19.97, 31.18, -52.41)
CIE-LCH	lch(19.97, 60.99, 300.75°)
OKLab	oklab(32.29% 0.0028 -0.1517)
OKLCH	oklch(32.29% 0.152 271.1)
XYZ	xyz(4.9094, 2.9807, 20.3912)
Luminance	0.0298 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C237F #7F781C

analogous

#1C547F #1C237F #471C7F

triadic

#1C237F #7F1C23 #237F1C

tetradic

#1C237F #7F1C54 #7F781C #1C7F47

square

#1C237F #7F1C54 #7F781C #1C7F47

split-complementary

#1C237F #7F471C #547F1C

monochromatic

#06071B #11154D #1C237F #2731B1 #404BD5

Accessibility & contrast

On white

13.16

#1C237F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#1C237F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C237F

13.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C237F	#FFFFFF	#000000	##FFFFFF
##1C237F	1.00	13.16	1.60	13.16
#FFFFFF	13.16	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003582

Deuteranopia (green-blind)

#002B7D

Tritanopia (blue-blind)

#003D4E

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1c237f;
/* rgb */ color: rgb(28, 35, 127);
/* oklch */ color: oklch(32.3% 0.152 271.1);

Tailwind

colors: {
  custom: {
    50: '#6a5ea5',
    500: '#1c237f',
    950: '#000000',
  },
}

SCSS

$custom: #1c237f;
$custom-light: #6a5ea5;
$custom-dark: #000000;

JSON

{
  "hex": "#1c237f",
  "rgb": {
    "r": 28,
    "g": 35,
    "b": 127
  },
  "hsl": {
    "h": 235.758,
    "s": 63.871,
    "l": 30.392
  },
  "oklch": {
    "l": 0.32292,
    "c": 0.15173,
    "h": 271.1
  },
  "luminance": 0.02981
}

Semantic roles & 50–950 ramp

primary

#1C237F

secondary

#B3AB44

accent

#DB41E7

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08040F

muted

#7A797F

Preview Lab

Preview with #1C237F

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

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