#1D528B#1D528B

#1D528B is a dark, moderate cyan. Relative luminance 0.082; OKLCH L 43.4% C 0.109 H 253.1°. Best body text is #FFFFFF at 7.98:1 contrast (WCAG AA passes).

Color values

HEX	#1D528B
RGB	rgb(29, 82, 139)
HSL	hsl(211, 65%, 33%)
HSV	hsv(211, 79%, 55%)
CMYK	cmyk(79.1%, 41%, 0%, 45.5%)
CIE-LAB	lab(34.31, 3.91, -36.64)
CIE-LCH	lch(34.31, 36.85, 276.10°)
OKLab	oklab(43.44% -0.0318 -0.1046)
OKLCH	oklch(43.44% 0.109 253.1)
XYZ	xyz(8.1824, 8.1589, 25.5647)
Luminance	0.0816 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D528B #8B561D

analogous

#1D898B #1D528B #1F1D8B

triadic

#1D528B #8B1D52 #528B1D

tetradic

#1D528B #8B1D89 #8B561D #1D8B1F

square

#1D528B #8B1D89 #8B561D #1D8B1F

split-complementary

#1D528B #8B1F1D #898B1D

monochromatic

#081626 #123458 #1D528B #2870BE #498FD9

Accessibility & contrast

On white

7.98

#1D528B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#1D528B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D528B

7.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D528B	#FFFFFF	#000000	##FFFFFF
##1D528B	1.00	7.98	2.63	7.98
#FFFFFF	7.98	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#37568D

Deuteranopia (green-blind)

#254C8A

Tritanopia (blue-blind)

#005F67

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1d528b;
/* rgb */ color: rgb(29, 82, 139);
/* oklch */ color: oklch(43.4% 0.109 253.1);

Tailwind

colors: {
  custom: {
    50: '#6a82ad',
    500: '#1d528b',
    950: '#000000',
  },
}

SCSS

$custom: #1d528b;
$custom-light: #6a82ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1d528b",
  "rgb": {
    "r": 29,
    "g": 82,
    "b": 139
  },
  "hsl": {
    "h": 211.091,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.43436,
    "c": 0.10938,
    "h": 253.1
  },
  "luminance": 0.0816
}

Semantic roles & 50–950 ramp

primary

#1D528B

secondary

#BB8449

accent

#973FE8

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1D528B

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

Preview Lab → · Contrast checker → · Palette generator →