#1D538D#1D538D

#1D538D is a dark, moderate cyan. Relative luminance 0.084; OKLCH L 43.8% C 0.111 H 253.1°. Best body text is #FFFFFF at 7.85:1 contrast (WCAG AA passes).

Color values

HEX	#1D538D
RGB	rgb(29, 83, 141)
HSL	hsl(211, 66%, 33%)
HSV	hsv(211, 79%, 55%)
CMYK	cmyk(79.4%, 41.1%, 0%, 44.7%)
CIE-LAB	lab(34.74, 4.05, -37.18)
CIE-LCH	lch(34.74, 37.40, 276.22°)
OKLab	oklab(43.81% -0.0322 -0.1062)
OKLCH	oklch(43.81% 0.111 253.1)
XYZ	xyz(8.4059, 8.3698, 26.3667)
Luminance	0.0837 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D538D #8D571D

analogous

#1D8B8D #1D538D #1F1D8D

triadic

#1D538D #8D1D53 #538D1D

tetradic

#1D538D #8D1D8B #8D571D #1D8D1F

square

#1D538D #8D1D8B #8D571D #1D8D1F

split-complementary

#1D538D #8D1F1D #8B8D1D

monochromatic

#081727 #13355A #1D538D #2771C0 #4B90DA

Accessibility & contrast

On white

7.85

#1D538D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#1D538D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D538D

7.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D538D	#FFFFFF	#000000	##FFFFFF
##1D538D	1.00	7.85	2.67	7.85
#FFFFFF	7.85	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#37578F

Deuteranopia (green-blind)

#254D8C

Tritanopia (blue-blind)

#006169

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1d538d;
/* rgb */ color: rgb(29, 83, 141);
/* oklch */ color: oklch(43.8% 0.111 253.1);

Tailwind

colors: {
  custom: {
    50: '#6b82af',
    500: '#1d538d',
    950: '#000000',
  },
}

SCSS

$custom: #1d538d;
$custom-light: #6b82af;
$custom-dark: #000000;

JSON

{
  "hex": "#1d538d",
  "rgb": {
    "r": 29,
    "g": 83,
    "b": 141
  },
  "hsl": {
    "h": 211.071,
    "s": 65.882,
    "l": 33.333
  },
  "oklch": {
    "l": 0.4381,
    "c": 0.11099,
    "h": 253.1
  },
  "luminance": 0.08371
}

Semantic roles & 50–950 ramp

primary

#1D538D

secondary

#BC854A

accent

#973FE9

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#080A10

muted

#7A7C7F

Preview Lab

Preview with #1D538D

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

Preview Lab → · Contrast checker → · Palette generator →