#234F9B#234F9B

#234F9B is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.1% C 0.133 H 260.5°. Best body text is #FFFFFF at 7.89:1 contrast (WCAG AA passes).

Color values

HEX	#234F9B
RGB	rgb(35, 79, 155)
HSL	hsl(218, 63%, 37%)
HSV	hsv(218, 77%, 61%)
CMYK	cmyk(77.4%, 49%, 0%, 39.2%)
CIE-LAB	lab(34.63, 13.02, -45.84)
CIE-LCH	lch(34.63, 47.65, 285.86°)
OKLab	oklab(44.07% -0.022 -0.1317)
OKLCH	oklch(44.07% 0.133 260.5)
XYZ	xyz(9.4034, 8.3148, 32.1133)
Luminance	0.0832 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#234F9B #9B6F23

analogous

#238B9B #234F9B #33239B

triadic

#234F9B #9B234F #4F9B23

tetradic

#234F9B #9B238B #9B6F23 #239B33

square

#234F9B #9B238B #9B6F23 #239B33

split-complementary

#234F9B #9B3323 #8B9B23

monochromatic

#0C1C37 #183669 #234F9B #2E68CD #5E8CDB

Accessibility & contrast

On white

7.89

#234F9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#234F9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #234F9B

7.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##234F9B	#FFFFFF	#000000	##FFFFFF
##234F9B	1.00	7.89	2.66	7.89
#FFFFFF	7.89	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#24579E

Deuteranopia (green-blind)

#004C99

Tritanopia (blue-blind)

#00616D

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #234f9b;
/* rgb */ color: rgb(35, 79, 155);
/* oklch */ color: oklch(44.1% 0.133 260.5);

Tailwind

colors: {
  custom: {
    50: '#707fb9',
    500: '#234f9b',
    950: '#000000',
  },
}

SCSS

$custom: #234f9b;
$custom-light: #707fb9;
$custom-dark: #000000;

JSON

{
  "hex": "#234f9b",
  "rgb": {
    "r": 35,
    "g": 79,
    "b": 155
  },
  "hsl": {
    "h": 218,
    "s": 63.158,
    "l": 37.255
  },
  "oklch": {
    "l": 0.44069,
    "c": 0.13349,
    "h": 260.5
  },
  "luminance": 0.08316
}

Semantic roles & 50–950 ramp

primary

#234F9B

secondary

#BF9A5A

accent

#AA42E6

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A11

muted

#7B7C80

Preview Lab

Preview with #234F9B

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

Preview Lab → · Contrast checker → · Palette generator →