#1C30B4#1C30B4

#1C30B4 is a dark, highly saturated blue. Relative luminance 0.057; OKLCH L 40.1% C 0.205 H 267.5°. Best body text is #FFFFFF at 9.85:1 contrast (WCAG AA passes).

Color values

HEX	#1C30B4
RGB	rgb(28, 48, 180)
HSL	hsl(232, 73%, 41%)
HSV	hsv(232, 84%, 71%)
CMYK	cmyk(84.4%, 73.3%, 0%, 29.4%)
CIE-LAB	lab(28.52, 42.31, -70.81)
CIE-LCH	lch(28.52, 82.49, 300.86°)
OKLab	oklab(40.12% -0.0089 -0.2053)
OKLCH	oklch(40.12% 0.205 267.5)
XYZ	xyz(9.7712, 5.6549, 43.7477)
Luminance	0.0566 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.95

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C30B4 #B4A01C

analogous

#1C7CB4 #1C30B4 #541CB4

triadic

#1C30B4 #B41C30 #30B41C

tetradic

#1C30B4 #B41C7C #B4A01C #1CB454

square

#1C30B4 #B41C7C #B4A01C #1CB454

split-complementary

#1C30B4 #B4541C #7CB41C

monochromatic

#0C144A #14227F #1C30B4 #2F46DF #6475E7

Accessibility & contrast

On white

9.85

#1C30B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#1C30B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C30B4

9.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C30B4	#FFFFFF	#000000	##FFFFFF
##1C30B4	1.00	9.85	2.13	9.85
#FFFFFF	9.85	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BB8

Deuteranopia (green-blind)

#003CB2

Tritanopia (blue-blind)

#00566F

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1c30b4;
/* rgb */ color: rgb(28, 48, 180);
/* oklch */ color: oklch(40.1% 0.205 267.5);

Tailwind

colors: {
  custom: {
    50: '#7769cc',
    500: '#1c30b4',
    950: '#000000',
  },
}

SCSS

$custom: #1c30b4;
$custom-light: #7769cc;
$custom-dark: #000000;

JSON

{
  "hex": "#1c30b4",
  "rgb": {
    "r": 28,
    "g": 48,
    "b": 180
  },
  "hsl": {
    "h": 232.105,
    "s": 73.077,
    "l": 40.784
  },
  "oklch": {
    "l": 0.40119,
    "c": 0.20547,
    "h": 267.5
  },
  "luminance": 0.05656
}

Semantic roles & 50–950 ramp

primary

#1C30B4

secondary

#CCBE60

accent

#D838F0

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0614

muted

#7C7A82

Preview Lab

Preview with #1C30B4

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

Preview Lab → · Contrast checker → · Palette generator →