#2337B0#2337B0

#2337B0 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 41.1% C 0.191 H 268.4°. Best body text is #FFFFFF at 9.35:1 contrast (WCAG AA passes).

Color values

HEX	#2337B0
RGB	rgb(35, 55, 176)
HSL	hsl(231, 67%, 41%)
HSV	hsv(231, 80%, 69%)
CMYK	cmyk(80.1%, 68.8%, 0%, 31%)
CIE-LAB	lab(29.97, 37.06, -66.04)
CIE-LCH	lch(29.97, 75.73, 299.30°)
OKLab	oklab(41.12% -0.0053 -0.1913)
OKLCH	oklch(41.12% 0.191 268.4)
XYZ	xyz(9.8931, 6.2231, 41.7457)
Luminance	0.0622 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.65

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2337B0 #B09C23

analogous

#237EB0 #2337B0 #5523B0

triadic

#2337B0 #B02337 #37B023

tetradic

#2337B0 #B0237E #B09C23 #23B055

square

#2337B0 #B0237E #B09C23 #23B055

split-complementary

#2337B0 #B05523 #7EB023

monochromatic

#0F174A #19277D #2337B0 #394FD8 #6C7CE2

Accessibility & contrast

On white

9.35

#2337B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#2337B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2337B0

9.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2337B0	#FFFFFF	#000000	##FFFFFF
##2337B0	1.00	9.35	2.24	9.35
#FFFFFF	9.35	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DB4

Deuteranopia (green-blind)

#0040AE

Tritanopia (blue-blind)

#00586F

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #2337b0;
/* rgb */ color: rgb(35, 55, 176);
/* oklch */ color: oklch(41.1% 0.191 268.4);

Tailwind

colors: {
  custom: {
    50: '#776ec9',
    500: '#2337b0',
    950: '#000000',
  },
}

SCSS

$custom: #2337b0;
$custom-light: #776ec9;
$custom-dark: #000000;

JSON

{
  "hex": "#2337b0",
  "rgb": {
    "r": 35,
    "g": 55,
    "b": 176
  },
  "hsl": {
    "h": 231.489,
    "s": 66.825,
    "l": 41.373
  },
  "oklch": {
    "l": 0.41117,
    "c": 0.19134,
    "h": 268.4
  },
  "luminance": 0.06224
}

Semantic roles & 50–950 ramp

primary

#2337B0

secondary

#C8BA67

accent

#D13EEA

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2337B0

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

Preview Lab → · Contrast checker → · Palette generator →