#1C3E83#1C3E83

#1C3E83 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.1% C 0.123 H 262.4°. Best body text is #FFFFFF at 10.16:1 contrast (WCAG AA passes).

Color values

HEX	#1C3E83
RGB	rgb(28, 62, 131)
HSL	hsl(220, 65%, 31%)
HSV	hsv(220, 79%, 51%)
CMYK	cmyk(78.6%, 52.7%, 0%, 48.6%)
CIE-LAB	lab(27.66, 14.15, -42.38)
CIE-LCH	lch(27.66, 44.68, 288.46°)
OKLab	oklab(38.12% -0.0162 -0.122)
OKLCH	oklch(38.12% 0.123 262.4)
XYZ	xyz(6.2968, 5.3301, 22.1653)
Luminance	0.0533 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3E83 #83611C

analogous

#1C7183 #1C3E83 #2D1C83

triadic

#1C3E83 #831C3E #3E831C

tetradic

#1C3E83 #831C71 #83611C #1C832D

square

#1C3E83 #831C71 #83611C #1C832D

split-complementary

#1C3E83 #832D1C #71831C

monochromatic

#060E1E #112651 #1C3E83 #2756B5 #4374D7

Accessibility & contrast

On white

10.16

#1C3E83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#1C3E83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3E83

10.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3E83	#FFFFFF	#000000	##FFFFFF
##1C3E83	1.00	10.16	2.07	10.16
#FFFFFF	10.16	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#124685

Deuteranopia (green-blind)

#003D82

Tritanopia (blue-blind)

#004F5A

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1c3e83;
/* rgb */ color: rgb(28, 62, 131);
/* oklch */ color: oklch(38.1% 0.123 262.4);

Tailwind

colors: {
  custom: {
    50: '#6972a8',
    500: '#1c3e83',
    950: '#000000',
  },
}

SCSS

$custom: #1c3e83;
$custom-light: #6972a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3e83",
  "rgb": {
    "r": 28,
    "g": 62,
    "b": 131
  },
  "hsl": {
    "h": 220.194,
    "s": 64.78,
    "l": 31.176
  },
  "oklch": {
    "l": 0.38117,
    "c": 0.12303,
    "h": 262.4
  },
  "luminance": 0.05331
}

Semantic roles & 50–950 ramp

primary

#1C3E83

secondary

#B69145

accent

#B040E8

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1C3E83

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

Preview Lab → · Contrast checker → · Palette generator →