#1F459F#1F459F

#1F459F is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.1% C 0.153 H 263.8°. Best body text is #FFFFFF at 8.71:1 contrast (WCAG AA passes).

Color values

HEX	#1F459F
RGB	rgb(31, 69, 159)
HSL	hsl(222, 67%, 37%)
HSV	hsv(222, 81%, 62%)
CMYK	cmyk(80.5%, 56.6%, 0%, 37.6%)
CIE-LAB	lab(31.92, 20.91, -52.64)
CIE-LCH	lch(31.92, 56.65, 291.67°)
OKLab	oklab(42.06% -0.0166 -0.1519)
OKLCH	oklch(42.06% 0.153 263.8)
XYZ	xyz(8.9490, 7.0497, 33.6832)
Luminance	0.0705 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F459F #9F791F

analogous

#1F859F #1F459F #391F9F

triadic

#1F459F #9F1F45 #459F1F

tetradic

#1F459F #9F1F85 #9F791F #1F9F39

square

#1F459F #9F1F85 #9F791F #1F9F39

split-complementary

#1F459F #9F391F #859F1F

monochromatic

#0B1939 #152F6C #1F459F #295BD2 #5A81DF

Accessibility & contrast

On white

8.71

#1F459F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#1F459F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F459F

8.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F459F	#FFFFFF	#000000	##FFFFFF
##1F459F	1.00	8.71	2.41	8.71
#FFFFFF	8.71	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051A2

Deuteranopia (green-blind)

#00459D

Tritanopia (blue-blind)

#005B6B

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1f459f;
/* rgb */ color: rgb(31, 69, 159);
/* oklch */ color: oklch(42.1% 0.153 263.8);

Tailwind

colors: {
  custom: {
    50: '#7078bc',
    500: '#1f459f',
    950: '#000000',
  },
}

SCSS

$custom: #1f459f;
$custom-light: #7078bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f459f",
  "rgb": {
    "r": 31,
    "g": 69,
    "b": 159
  },
  "hsl": {
    "h": 222.188,
    "s": 67.368,
    "l": 37.255
  },
  "oklch": {
    "l": 0.42059,
    "c": 0.15285,
    "h": 263.8
  },
  "luminance": 0.07051
}

Semantic roles & 50–950 ramp

primary

#1F459F

secondary

#C3A357

accent

#B73EEA

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1F459F

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

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