#1C4F83#1C4F83

#1C4F83 is a dark, moderate cyan. Relative luminance 0.075; OKLCH L 42.1% C 0.102 H 251.9°. Best body text is #FFFFFF at 8.41:1 contrast (WCAG AA passes).

Color values

HEX	#1C4F83
RGB	rgb(28, 79, 131)
HSL	hsl(210, 65%, 31%)
HSV	hsv(210, 79%, 51%)
CMYK	cmyk(78.6%, 39.7%, 0%, 48.6%)
CIE-LAB	lab(32.87, 2.57, -34.03)
CIE-LCH	lch(32.87, 34.12, 274.33°)
OKLab	oklab(42.15% -0.0316 -0.097)
OKLCH	oklch(42.15% 0.102 251.9)
XYZ	xyz(7.3701, 7.4767, 22.5230)
Luminance	0.0748 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4F83 #83501C

analogous

#1C8283 #1C4F83 #1C1C83

triadic

#1C4F83 #831C4F #4F831C

tetradic

#1C4F83 #831C82 #83501C #1C831C

square

#1C4F83 #831C82 #83501C #1C831C

split-complementary

#1C4F83 #831C1C #82831C

monochromatic

#06121E #113151 #1C4F83 #276DB5 #438CD7

Accessibility & contrast

On white

8.41

#1C4F83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#1C4F83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4F83

8.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4F83	#FFFFFF	#000000	##FFFFFF
##1C4F83	1.00	8.41	2.50	8.41
#FFFFFF	8.41	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#375285

Deuteranopia (green-blind)

#264982

Tritanopia (blue-blind)

#005B62

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1c4f83;
/* rgb */ color: rgb(28, 79, 131);
/* oklch */ color: oklch(42.1% 0.102 251.9);

Tailwind

colors: {
  custom: {
    50: '#687fa7',
    500: '#1c4f83',
    950: '#000000',
  },
}

SCSS

$custom: #1c4f83;
$custom-light: #687fa7;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4f83",
  "rgb": {
    "r": 28,
    "g": 79,
    "b": 131
  },
  "hsl": {
    "h": 210.291,
    "s": 64.78,
    "l": 31.176
  },
  "oklch": {
    "l": 0.42145,
    "c": 0.10208,
    "h": 251.9
  },
  "luminance": 0.07478
}

Semantic roles & 50–950 ramp

primary

#1C4F83

secondary

#B67E45

accent

#9540E8

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1C4F83

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

Preview Lab → · Contrast checker → · Palette generator →