#1D4B71#1D4B71

#1D4B71 is a dark, moderate cyan. Relative luminance 0.065; OKLCH L 40.0% C 0.081 H 246.7°. Best body text is #FFFFFF at 9.14:1 contrast (WCAG AA passes).

Color values

HEX	#1D4B71
RGB	rgb(29, 75, 113)
HSL	hsl(207, 59%, 28%)
HSV	hsv(207, 74%, 44%)
CMYK	cmyk(74.3%, 33.6%, 0%, 55.7%)
CIE-LAB	lab(30.60, -1.77, -26.39)
CIE-LCH	lch(30.60, 26.45, 266.16°)
OKLab	oklab(40.05% -0.0322 -0.0748)
OKLCH	oklch(40.05% 0.081 246.7)
XYZ	xyz(6.0023, 6.4850, 16.5550)
Luminance	0.0649 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4B71 #71431D

analogous

#1D716D #1D4B71 #1D2171

triadic

#1D4B71 #711D4B #4B711D

tetradic

#1D4B71 #6D1D71 #71431D #21711D

square

#1D4B71 #6D1D71 #71431D #21711D

split-complementary

#1D4B71 #711D21 #716D1D

monochromatic

#061018 #112B40 #1D4B71 #296BA2 #3C8BCD

Accessibility & contrast

On white

9.14

#1D4B71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#1D4B71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4B71

9.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4B71	#FFFFFF	#000000	##FFFFFF
##1D4B71	1.00	9.14	2.30	9.14
#FFFFFF	9.14	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A4C73

Deuteranopia (green-blind)

#2E4470

Tritanopia (blue-blind)

#005459

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1d4b71;
/* rgb */ color: rgb(29, 75, 113);
/* oklch */ color: oklch(40.0% 0.081 246.7);

Tailwind

colors: {
  custom: {
    50: '#657d9a',
    500: '#1d4b71',
    950: '#000000',
  },
}

SCSS

$custom: #1d4b71;
$custom-light: #657d9a;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4b71",
  "rgb": {
    "r": 29,
    "g": 75,
    "b": 113
  },
  "hsl": {
    "h": 207.143,
    "s": 59.155,
    "l": 27.843
  },
  "oklch": {
    "l": 0.40046,
    "c": 0.08141,
    "h": 246.7
  },
  "luminance": 0.06486
}

Semantic roles & 50–950 ramp

primary

#1D4B71

secondary

#A57044

accent

#8C45E2

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#06090E

muted

#7A7B7E

Preview Lab

Preview with #1D4B71

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

Preview Lab → · Contrast checker → · Palette generator →