#1C2F83#1C2F83

#1C2F83 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.9% C 0.143 H 268.1°. Best body text is #FFFFFF at 11.77:1 contrast (WCAG AA passes).

Color values

HEX	#1C2F83
RGB	rgb(28, 47, 131)
HSL	hsl(229, 65%, 31%)
HSV	hsv(229, 79%, 51%)
CMYK	cmyk(78.6%, 64.1%, 0%, 48.6%)
CIE-LAB	lab(23.40, 24.63, -49.31)
CIE-LCH	lch(23.40, 55.12, 296.54°)
OKLab	oklab(34.92% -0.0048 -0.1425)
OKLCH	oklch(34.92% 0.143 268.1)
XYZ	xyz(5.5907, 3.9180, 21.9299)
Luminance	0.0392 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C2F83 #83701C

analogous

#1C6283 #1C2F83 #3C1C83

triadic

#1C2F83 #831C2F #2F831C

tetradic

#1C2F83 #831C62 #83701C #1C833C

square

#1C2F83 #831C62 #83701C #1C833C

split-complementary

#1C2F83 #833C1C #62831C

monochromatic

#060B1E #111D51 #1C2F83 #2741B5 #435ED7

Accessibility & contrast

On white

11.77

#1C2F83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1C2F83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C2F83

11.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C2F83	#FFFFFF	#000000	##FFFFFF
##1C2F83	1.00	11.77	1.78	11.77
#FFFFFF	11.77	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D86

Deuteranopia (green-blind)

#003381

Tritanopia (blue-blind)

#004554

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1c2f83;
/* rgb */ color: rgb(28, 47, 131);
/* oklch */ color: oklch(34.9% 0.143 268.1);

Tailwind

colors: {
  custom: {
    50: '#6a67a8',
    500: '#1c2f83',
    950: '#000000',
  },
}

SCSS

$custom: #1c2f83;
$custom-light: #6a67a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1c2f83",
  "rgb": {
    "r": 28,
    "g": 47,
    "b": 131
  },
  "hsl": {
    "h": 228.932,
    "s": 64.78,
    "l": 31.176
  },
  "oklch": {
    "l": 0.34918,
    "c": 0.14262,
    "h": 268.1
  },
  "luminance": 0.03919
}

Semantic roles & 50–950 ramp

primary

#1C2F83

secondary

#B6A145

accent

#C940E8

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070610

muted

#7A7A7F

Preview Lab

Preview with #1C2F83

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

Preview Lab → · Contrast checker → · Palette generator →