#307FBB#307FBB

#307FBB is a mid, moderate cyan. Relative luminance 0.194; OKLCH L 57.7% C 0.120 H 245.2°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#307FBB
RGB	rgb(48, 127, 187)
HSL	hsl(206, 59%, 46%)
HSV	hsv(206, 74%, 73%)
CMYK	cmyk(74.3%, 32.1%, 0%, 26.7%)
CIE-LAB	lab(51.14, -3.48, -38.34)
CIE-LCH	lch(51.14, 38.50, 264.81°)
OKLab	oklab(57.65% -0.0502 -0.1087)
OKLCH	oklch(57.65% 0.12 245.2)
XYZ	xyz(17.7745, 19.3929, 49.8105)
Luminance	0.1940 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307FBB #BB6C30

analogous

#30BBB1 #307FBB #303ABB

triadic

#307FBB #BB307F #7FBB30

tetradic

#307FBB #B130BB #BB6C30 #3ABB30

square

#307FBB #B130BB #BB6C30 #3ABB30

split-complementary

#307FBB #BB303A #BBB130

monochromatic

#173D5A #235E8A #307FBB #559DD3 #86B9E0

Accessibility & contrast

On white

4.30

#307FBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.88

#307FBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307FBB

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307FBB	#FFFFFF	#000000	##000000
##307FBB	1.00	4.30	4.88	4.88
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6381BE

Deuteranopia (green-blind)

#5074BA

Tritanopia (blue-blind)

#008E94

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #307fbb;
/* rgb */ color: rgb(48, 127, 187);
/* oklch */ color: oklch(57.7% 0.120 245.2);

Tailwind

colors: {
  custom: {
    50: '#7ba3d0',
    500: '#307fbb',
    950: '#000000',
  },
}

SCSS

$custom: #307fbb;
$custom-light: #7ba3d0;
$custom-dark: #000000;

JSON

{
  "hex": "#307fbb",
  "rgb": {
    "r": 48,
    "g": 127,
    "b": 187
  },
  "hsl": {
    "h": 205.899,
    "s": 59.149,
    "l": 46.078
  },
  "oklch": {
    "l": 0.57653,
    "c": 0.11973,
    "h": 245.2
  },
  "luminance": 0.19395
}

Semantic roles & 50–950 ramp

primary

#307FBB

secondary

#C99E7D

accent

#8945E2

background

#F8FAFC

surface

#EFF3F9

border

#CACDD2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #307FBB

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

Preview Lab → · Contrast checker → · Palette generator →