#337EBB#337EBB

#337EBB is a mid, moderate cyan. Relative luminance 0.192; OKLCH L 57.5% C 0.119 H 246.6°. Best body text is #000000 at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#337EBB
RGB	rgb(51, 126, 187)
HSL	hsl(207, 57%, 47%)
HSV	hsv(207, 73%, 73%)
CMYK	cmyk(72.7%, 32.6%, 0%, 26.7%)
CIE-LAB	lab(50.93, -2.48, -38.67)
CIE-LCH	lch(50.93, 38.74, 266.32°)
OKLab	oklab(57.51% -0.0475 -0.1096)
OKLCH	oklch(57.51% 0.119 246.6)
XYZ	xyz(17.7923, 19.2114, 49.7745)
Luminance	0.1921 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337EBB #BB7033

analogous

#33BBB4 #337EBB #333ABB

triadic

#337EBB #BB337E #7EBB33

tetradic

#337EBB #B433BB #BB7033 #3ABB33

square

#337EBB #B433BB #BB7033 #3ABB33

split-complementary

#337EBB #BB333A #BBB433

monochromatic

#193D5B #265E8B #337EBB #599CD2 #89B9DF

Accessibility & contrast

On white

4.34

#337EBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.84

#337EBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337EBB

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337EBB	#FFFFFF	#000000	##000000
##337EBB	1.00	4.34	4.84	4.84
#FFFFFF	4.34	1.00	21.00	21.00
#000000	4.84	21.00	1.00	1.00
##000000	4.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6280BE

Deuteranopia (green-blind)

#4F74BA

Tritanopia (blue-blind)

#008D94

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #337ebb;
/* rgb */ color: rgb(51, 126, 187);
/* oklch */ color: oklch(57.5% 0.119 246.6);

Tailwind

colors: {
  custom: {
    50: '#7ca3d0',
    500: '#337ebb',
    950: '#000000',
  },
}

SCSS

$custom: #337ebb;
$custom-light: #7ca3d0;
$custom-dark: #000000;

JSON

{
  "hex": "#337ebb",
  "rgb": {
    "r": 51,
    "g": 126,
    "b": 187
  },
  "hsl": {
    "h": 206.912,
    "s": 57.143,
    "l": 46.667
  },
  "oklch": {
    "l": 0.57512,
    "c": 0.11949,
    "h": 246.6
  },
  "luminance": 0.19213
}

Semantic roles & 50–950 ramp

primary

#337EBB

secondary

#C9A181

accent

#8C47E0

background

#F8FAFC

surface

#EFF3F9

border

#CACDD2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #337EBB

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

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