#233EA8#233EA8

#233EA8 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.6% C 0.173 H 267.1°. Best body text is #FFFFFF at 9.03:1 contrast (WCAG AA passes).

Color values

HEX	#233EA8
RGB	rgb(35, 62, 168)
HSL	hsl(228, 66%, 40%)
HSV	hsv(228, 79%, 66%)
CMYK	cmyk(79.2%, 63.1%, 0%, 34.1%)
CIE-LAB	lab(30.95, 29.53, -59.64)
CIE-LCH	lch(30.95, 66.56, 296.34°)
OKLab	oklab(41.61% -0.0086 -0.1725)
OKLCH	oklch(41.61% 0.173 267.1)
XYZ	xyz(9.4812, 6.6286, 37.8180)
Luminance	0.0663 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233EA8 #A88D23

analogous

#2380A8 #233EA8 #4B23A8

triadic

#233EA8 #A8233E #3EA823

tetradic

#233EA8 #A82380 #A88D23 #23A84B

square

#233EA8 #A82380 #A88D23 #23A84B

split-complementary

#233EA8 #A84B23 #80A823

monochromatic

#0E1943 #182B75 #233EA8 #3454D5 #667FDF

Accessibility & contrast

On white

9.03

#233EA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#233EA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233EA8

9.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233EA8	#FFFFFF	#000000	##FFFFFF
##233EA8	1.00	9.03	2.33	9.03
#FFFFFF	9.03	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAB

Deuteranopia (green-blind)

#0043A6

Tritanopia (blue-blind)

#005A6D

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #233ea8;
/* rgb */ color: rgb(35, 62, 168);
/* oklch */ color: oklch(41.6% 0.173 267.1);

Tailwind

colors: {
  custom: {
    50: '#7473c3',
    500: '#233ea8',
    950: '#000000',
  },
}

SCSS

$custom: #233ea8;
$custom-light: #7473c3;
$custom-dark: #000000;

JSON

{
  "hex": "#233ea8",
  "rgb": {
    "r": 35,
    "g": 62,
    "b": 168
  },
  "hsl": {
    "h": 227.82,
    "s": 65.517,
    "l": 39.804
  },
  "oklch": {
    "l": 0.41608,
    "c": 0.17275,
    "h": 267.1
  },
  "luminance": 0.0663
}

Semantic roles & 50–950 ramp

primary

#233EA8

secondary

#C5B162

accent

#C63FE8

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #233EA8

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

Preview Lab → · Contrast checker → · Palette generator →