#1D548B#1D548B

#1D548B is a dark, moderate cyan. Relative luminance 0.085; OKLCH L 43.9% C 0.107 H 251.7°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#1D548B
RGB	rgb(29, 84, 139)
HSL	hsl(210, 65%, 33%)
HSV	hsv(210, 79%, 55%)
CMYK	cmyk(79.1%, 39.6%, 0%, 45.5%)
CIE-LAB	lab(34.93, 2.60, -35.65)
CIE-LCH	lch(34.93, 35.74, 274.18°)
OKLab	oklab(43.92% -0.0337 -0.1017)
OKLCH	oklch(43.92% 0.107 251.7)
XYZ	xyz(8.3355, 8.4650, 25.6157)
Luminance	0.0847 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D548B #8B541D

analogous

#1D8B8B #1D548B #1D1D8B

triadic

#1D548B #8B1D54 #548B1D

tetradic

#1D548B #8B1D8B #8B541D #1D8B1D

square

#1D548B #8B1D8B #8B541D #1D8B1D

split-complementary

#1D548B #8B1D1D #8B8B1D

monochromatic

#081726 #123558 #1D548B #2873BE #4991D9

Accessibility & contrast

On white

7.80

#1D548B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#1D548B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D548B

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D548B	#FFFFFF	#000000	##FFFFFF
##1D548B	1.00	7.80	2.69	7.80
#FFFFFF	7.80	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A588D

Deuteranopia (green-blind)

#294E8A

Tritanopia (blue-blind)

#006168

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1d548b;
/* rgb */ color: rgb(29, 84, 139);
/* oklch */ color: oklch(43.9% 0.107 251.7);

Tailwind

colors: {
  custom: {
    50: '#6a83ad',
    500: '#1d548b',
    950: '#000000',
  },
}

SCSS

$custom: #1d548b;
$custom-light: #6a83ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1d548b",
  "rgb": {
    "r": 29,
    "g": 84,
    "b": 139
  },
  "hsl": {
    "h": 210,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.43921,
    "c": 0.10714,
    "h": 251.7
  },
  "luminance": 0.08466
}

Semantic roles & 50–950 ramp

primary

#1D548B

secondary

#BB8249

accent

#943FE8

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1D548B

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

Preview Lab → · Contrast checker → · Palette generator →