#0C55B5
Closest named color: Blue Blue (#2242C7). oklch(46.8% 0.166 258.3), rgb(12, 85, 181).
Aa
White text reads best on this color (7.04:1).
About this color
#0C55B5 is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.166 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.052 away. White text reads best on it, at 7.04:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.166) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.98:1 |
| White text | 7.04:1 |
Values
| HEX | #0C55B5 |
| RGB | rgb(12, 85, 181) |
| HSL | hsl(214, 88%, 38%) |
| OKLCH | oklch(46.8% 0.166 258.3) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #0C55B5 | 7.04:1 | AAA | Lc -88.7 | Fine for body text |
| Black text on #0C55B5 | 2.98:1 | Fails | Lc 20.3 | Dividers and decoration only |
| #0C55B5 text on white | 7.04:1 | AAA | Lc 83.7 | Fine for body text |
| #0C55B5 text on black | 2.98:1 | Fails | Lc -18.3 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 700.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EBFA
oklch(93.7% 0.023 258.4)
-
Step 200
200
#C7DBF7
oklch(88.5% 0.044 256.8)
-
Step 300
300
#A1C3F5
oklch(81% 0.08 257.9)
-
Step 400
400
#6DA1F0
oklch(70.6% 0.129 258.5)
-
Step 500
500
#4588EB
oklch(63.2% 0.164 258.2)
-
Step 600
600
#246FD9
oklch(55.6% 0.178 258.2)
-
Step 700
700 (this color)
#0C55B5
oklch(46.8% 0.166 258.3)
-
Step 800
800
#154C98
oklch(42.7% 0.137 258)
-
Step 900
900
#194079
oklch(37.7% 0.107 258.2)
-
Step 950
950
#102647
oklch(27% 0.068 258.4)
#0C55B5 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #0560B8 | 0.029 |
| Deuteranopia (no green cones) | #0052B3 | 0.010 |
| Tritanopia (no blue cones) | #006D7C | 0.127 |
| Achromatopsia (no color) | #595959 | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0C55B5
#0C55B5
oklch(46.8% 0.166 258.3)
- #785200
#785200
oklch(46.8% 0.098 77.8)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #0C55B5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.052
- Mid Blue #276AB3 ΔE 0.063
- Dusk Blue #26538D ΔE 0.065
- Cobalt #1E488F ΔE 0.067
- Denim Blue #3B5B92 ΔE 0.070
- Sapphire #2138AB ΔE 0.070
- Majorelle Blue #3F37C9 ΔE 0.078
- Peacock Blue #016795 ΔE 0.078
Use #0C55B5 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.