#1D4F8B#1D4F8B

#1D4F8B is a dark, moderate cyan. Relative luminance 0.077; OKLCH L 42.7% C 0.113 H 255.1°. Best body text is #FFFFFF at 8.26:1 contrast (WCAG AA passes).

Color values

HEX	#1D4F8B
RGB	rgb(29, 79, 139)
HSL	hsl(213, 65%, 33%)
HSV	hsv(213, 79%, 55%)
CMYK	cmyk(79.1%, 43.2%, 0%, 45.5%)
CIE-LAB	lab(33.38, 5.90, -38.12)
CIE-LCH	lch(33.38, 38.57, 278.80°)
OKLab	oklab(42.72% -0.029 -0.109)
OKLCH	oklch(42.72% 0.113 255.1)
XYZ	xyz(7.9611, 7.7163, 25.4909)
Luminance	0.0772 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4F8B #8B591D

analogous

#1D868B #1D4F8B #221D8B

triadic

#1D4F8B #8B1D4F #4F8B1D

tetradic

#1D4F8B #8B1D86 #8B591D #1D8B22

square

#1D4F8B #8B1D86 #8B591D #1D8B22

split-complementary

#1D4F8B #8B221D #868B1D

monochromatic

#081526 #123258 #1D4F8B #286CBE #498BD9

Accessibility & contrast

On white

8.26

#1D4F8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#1D4F8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4F8B

8.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4F8B	#FFFFFF	#000000	##FFFFFF
##1D4F8B	1.00	8.26	2.54	8.26
#FFFFFF	8.26	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#31548D

Deuteranopia (green-blind)

#1E4A8A

Tritanopia (blue-blind)

#005D66

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1d4f8b;
/* rgb */ color: rgb(29, 79, 139);
/* oklch */ color: oklch(42.7% 0.113 255.1);

Tailwind

colors: {
  custom: {
    50: '#6a7fad',
    500: '#1d4f8b',
    950: '#000000',
  },
}

SCSS

$custom: #1d4f8b;
$custom-light: #6a7fad;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4f8b",
  "rgb": {
    "r": 29,
    "g": 79,
    "b": 139
  },
  "hsl": {
    "h": 212.727,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.42715,
    "c": 0.11285,
    "h": 255.1
  },
  "luminance": 0.07717
}

Semantic roles & 50–950 ramp

primary

#1D4F8B

secondary

#BB8749

accent

#9C3FE8

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1D4F8B

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

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