#233AA8#233AA8

#233AA8 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.9% C 0.178 H 268.0°. Best body text is #FFFFFF at 9.37:1 contrast (WCAG AA passes).

Color values

HEX	#233AA8
RGB	rgb(35, 58, 168)
HSL	hsl(230, 66%, 40%)
HSV	hsv(230, 79%, 66%)
CMYK	cmyk(79.2%, 65.5%, 0%, 34.1%)
CIE-LAB	lab(29.93, 32.17, -61.30)
CIE-LCH	lch(29.93, 69.23, 297.69°)
OKLab	oklab(40.86% -0.0063 -0.1774)
OKLCH	oklch(40.86% 0.178 268)
XYZ	xyz(9.2716, 6.2095, 37.7481)
Luminance	0.0621 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233AA8 #A89123

analogous

#237DA8 #233AA8 #4F23A8

triadic

#233AA8 #A8233A #3AA823

tetradic

#233AA8 #A8237D #A89123 #23A84F

square

#233AA8 #A8237D #A89123 #23A84F

split-complementary

#233AA8 #A84F23 #7DA823

monochromatic

#0E1743 #182975 #233AA8 #344FD5 #667BDF

Accessibility & contrast

On white

9.37

#233AA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#233AA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233AA8

9.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233AA8	#FFFFFF	#000000	##FFFFFF
##233AA8	1.00	9.37	2.24	9.37
#FFFFFF	9.37	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DAB

Deuteranopia (green-blind)

#0040A6

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #233aa8;
/* rgb */ color: rgb(35, 58, 168);
/* oklch */ color: oklch(40.9% 0.178 268.0);

Tailwind

colors: {
  custom: {
    50: '#7570c3',
    500: '#233aa8',
    950: '#000000',
  },
}

SCSS

$custom: #233aa8;
$custom-light: #7570c3;
$custom-dark: #000000;

JSON

{
  "hex": "#233aa8",
  "rgb": {
    "r": 35,
    "g": 58,
    "b": 168
  },
  "hsl": {
    "h": 229.624,
    "s": 65.517,
    "l": 39.804
  },
  "oklch": {
    "l": 0.40862,
    "c": 0.17753,
    "h": 268
  },
  "luminance": 0.06211
}

Semantic roles & 50–950 ramp

primary

#233AA8

secondary

#C5B462

accent

#CB3FE8

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #233AA8

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

Preview Lab → · Contrast checker → · Palette generator →