#1F458E#1F458E

#1F458E is a dark, vivid blue. Relative luminance 0.065; OKLCH L 40.7% C 0.129 H 261.8°. Best body text is #FFFFFF at 9.13:1 contrast (WCAG AA passes).

Color values

HEX	#1F458E
RGB	rgb(31, 69, 142)
HSL	hsl(219, 64%, 34%)
HSV	hsv(219, 78%, 56%)
CMYK	cmyk(78.2%, 51.4%, 0%, 44.3%)
CIE-LAB	lab(30.64, 14.13, -44.36)
CIE-LCH	lch(30.64, 46.56, 287.66°)
OKLab	oklab(40.68% -0.0184 -0.1276)
OKLCH	oklch(40.68% 0.129 261.8)
XYZ	xyz(7.5739, 6.4997, 26.4413)
Luminance	0.0650 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F458E #8E681F

analogous

#1F7D8E #1F458E #301F8E

triadic

#1F458E #8E1F45 #458E1F

tetradic

#1F458E #8E1F7D #8E681F #1F8E30

square

#1F458E #8E1F7D #8E681F #1F8E30

split-complementary

#1F458E #8E301F #7D8E1F

monochromatic

#09142A #142D5C #1F458E #2A5DC0 #4F7ED9

Accessibility & contrast

On white

9.13

#1F458E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#1F458E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F458E

9.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F458E	#FFFFFF	#000000	##FFFFFF
##1F458E	1.00	9.13	2.30	9.13
#FFFFFF	9.13	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#184E91

Deuteranopia (green-blind)

#00438D

Tritanopia (blue-blind)

#005762

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1f458e;
/* rgb */ color: rgb(31, 69, 142);
/* oklch */ color: oklch(40.7% 0.129 261.8);

Tailwind

colors: {
  custom: {
    50: '#6c78b0',
    500: '#1f458e',
    950: '#000000',
  },
}

SCSS

$custom: #1f458e;
$custom-light: #6c78b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f458e",
  "rgb": {
    "r": 31,
    "g": 69,
    "b": 142
  },
  "hsl": {
    "h": 219.459,
    "s": 64.162,
    "l": 33.922
  },
  "oklch": {
    "l": 0.40682,
    "c": 0.12891,
    "h": 261.8
  },
  "luminance": 0.06501
}

Semantic roles & 50–950 ramp

primary

#1F458E

secondary

#BB964D

accent

#AE41E7

background

#F7F7FA

surface

#EDEDF5

border

#C8C8CF

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #1F458E

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

Preview Lab → · Contrast checker → · Palette generator →