#3370B4#3370B4

#3370B4 is a mid, vivid cyan. Relative luminance 0.156; OKLCH L 53.9% C 0.124 H 253.2°. Best body text is #FFFFFF at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#3370B4
RGB	rgb(51, 112, 180)
HSL	hsl(212, 56%, 45%)
HSV	hsv(212, 72%, 71%)
CMYK	cmyk(71.7%, 37.8%, 0%, 29.4%)
CIE-LAB	lab(46.43, 3.47, -41.75)
CIE-LCH	lch(46.43, 41.89, 274.75°)
OKLab	oklab(53.86% -0.0359 -0.1188)
OKLCH	oklch(53.86% 0.124 253.2)
XYZ	xyz(15.3946, 15.5858, 45.3682)
Luminance	0.1559 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3370B4 #B47733

analogous

#33B0B4 #3370B4 #3733B4

triadic

#3370B4 #B43370 #70B433

tetradic

#3370B4 #B433B0 #B47733 #33B437

square

#3370B4 #B433B0 #B47733 #33B437

split-complementary

#3370B4 #B43733 #B0B433

monochromatic

#183555 #255284 #3370B4 #558FCF #85AEDC

Accessibility & contrast

On white

5.10

#3370B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.12

#3370B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3370B4

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3370B4	#FFFFFF	#000000	##FFFFFF
##3370B4	1.00	5.10	4.12	5.10
#FFFFFF	5.10	1.00	21.00	1.00
#000000	4.12	21.00	1.00	21.00
##FFFFFF	5.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5175B7

Deuteranopia (green-blind)

#3E69B3

Tritanopia (blue-blind)

#008089

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #3370b4;
/* rgb */ color: rgb(51, 112, 180);
/* oklch */ color: oklch(53.9% 0.124 253.2);

Tailwind

colors: {
  custom: {
    50: '#7b98cb',
    500: '#3370b4',
    950: '#000000',
  },
}

SCSS

$custom: #3370b4;
$custom-light: #7b98cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3370b4",
  "rgb": {
    "r": 51,
    "g": 112,
    "b": 180
  },
  "hsl": {
    "h": 211.628,
    "s": 55.844,
    "l": 45.294
  },
  "oklch": {
    "l": 0.53857,
    "c": 0.12415,
    "h": 253.2
  },
  "luminance": 0.15587
}

Semantic roles & 50–950 ramp

primary

#3370B4

secondary

#C6A37D

accent

#9849DF

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #3370B4

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

Preview Lab → · Contrast checker → · Palette generator →