#1C538B#1C538B

#1C538B is a dark, moderate cyan. Relative luminance 0.083; OKLCH L 43.6% C 0.109 H 252.1°. Best body text is #FFFFFF at 7.90:1 contrast (WCAG AA passes).

Color values

HEX	#1C538B
RGB	rgb(28, 83, 139)
HSL	hsl(210, 66%, 33%)
HSV	hsv(210, 80%, 55%)
CMYK	cmyk(79.9%, 40.3%, 0%, 45.5%)
CIE-LAB	lab(34.59, 3.14, -36.19)
CIE-LCH	lch(34.59, 36.33, 274.95°)
OKLab	oklab(43.65% -0.0333 -0.1033)
OKLCH	oklch(43.65% 0.109 252.1)
XYZ	xyz(8.2306, 8.2965, 25.5887)
Luminance	0.0830 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C538B #8B541C

analogous

#1C8B8B #1C538B #1C1C8B

triadic

#1C538B #8B1C53 #538B1C

tetradic

#1C538B #8B1C8B #8B541C #1C8B1C

square

#1C538B #8B1C8B #8B541C #1C8B1C

split-complementary

#1C538B #8B1C1C #8B8B1C

monochromatic

#071625 #123558 #1C538B #2671BE #4790DA

Accessibility & contrast

On white

7.90

#1C538B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#1C538B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C538B

7.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C538B	#FFFFFF	#000000	##FFFFFF
##1C538B	1.00	7.90	2.66	7.90
#FFFFFF	7.90	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#38578D

Deuteranopia (green-blind)

#274D8A

Tritanopia (blue-blind)

#006068

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1c538b;
/* rgb */ color: rgb(28, 83, 139);
/* oklch */ color: oklch(43.6% 0.109 252.1);

Tailwind

colors: {
  custom: {
    50: '#6a82ad',
    500: '#1c538b',
    950: '#000000',
  },
}

SCSS

$custom: #1c538b;
$custom-light: #6a82ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1c538b",
  "rgb": {
    "r": 28,
    "g": 83,
    "b": 139
  },
  "hsl": {
    "h": 210.27,
    "s": 66.467,
    "l": 32.745
  },
  "oklch": {
    "l": 0.43647,
    "c": 0.10858,
    "h": 252.1
  },
  "luminance": 0.08297
}

Semantic roles & 50–950 ramp

primary

#1C538B

secondary

#BC8247

accent

#953EE9

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1C538B

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

Preview Lab → · Contrast checker → · Palette generator →