#233C63#233C63

#233C63 is a dark, moderate blue. Relative luminance 0.045; OKLCH L 35.7% C 0.075 H 259.0°. Best body text is #FFFFFF at 11.06:1 contrast (WCAG AA passes).

Color values

HEX	#233C63
RGB	rgb(35, 60, 99)
HSL	hsl(217, 48%, 26%)
HSV	hsv(217, 65%, 39%)
CMYK	cmyk(64.6%, 39.4%, 0%, 61.2%)
CIE-LAB	lab(25.23, 3.98, -25.93)
CIE-LCH	lch(25.23, 26.24, 278.72°)
OKLab	oklab(35.65% -0.0143 -0.0735)
OKLCH	oklch(35.65% 0.075 259)
XYZ	xyz(4.5603, 4.4895, 12.4282)
Luminance	0.0449 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233C63 #634A23

analogous

#235C63 #233C63 #2A2363

triadic

#233C63 #63233C #3C6323

tetradic

#233C63 #63235C #634A23 #23632A

square

#233C63 #63235C #634A23 #23632A

split-complementary

#233C63 #632A23 #5C6323

monochromatic

#080E17 #132136 #233C63 #335790 #4473BD

Accessibility & contrast

On white

11.06

#233C63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#233C63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233C63

11.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233C63	#FFFFFF	#000000	##FFFFFF
##233C63	1.00	11.06	1.90	11.06
#FFFFFF	11.06	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B3F65

Deuteranopia (green-blind)

#233962

Tritanopia (blue-blind)

#00454A

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #233c63;
/* rgb */ color: rgb(35, 60, 99);
/* oklch */ color: oklch(35.7% 0.075 259.0);

Tailwind

colors: {
  custom: {
    50: '#64718f',
    500: '#233c63',
    950: '#000000',
  },
}

SCSS

$custom: #233c63;
$custom-light: #64718f;
$custom-dark: #000000;

JSON

{
  "hex": "#233c63",
  "rgb": {
    "r": 35,
    "g": 60,
    "b": 99
  },
  "hsl": {
    "h": 216.563,
    "s": 47.761,
    "l": 26.275
  },
  "oklch": {
    "l": 0.35651,
    "c": 0.07492,
    "h": 259
  },
  "luminance": 0.0449
}

Semantic roles & 50–950 ramp

primary

#233C63

secondary

#97794B

accent

#A350D7

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06070C

muted

#7A7A7D

Preview Lab

Preview with #233C63

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

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