#0C73EE
Closest named color: Cerulean Blue (#056EEE). oklch(57.6% 0.204 257.6), rgb(12, 115, 238).
Aa
Black text reads best on this color (4.70:1).
About this color
#0C73EE is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.204 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.013 away. Black text reads best on it, at 4.70:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.204) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.70:1 |
| White text | 4.46:1 |
Values
| HEX | #0C73EE |
| RGB | rgb(12, 115, 238) |
| HSL | hsl(213, 90%, 49%) |
| OKLCH | oklch(57.6% 0.204 257.6) |
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 #0C73EE | 4.46:1 | AA large text | Lc -75.7 | Fine for body text |
| Black text on #0C73EE | 4.70:1 | AA | Lc 33.9 | Non-text elements, placeholder text |
| #0C73EE text on white | 4.46:1 | AA large text | Lc 70.2 | Content text, not long reading |
| #0C73EE text on black | 4.70:1 | AA | Lc -31.5 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C5DBFB
oklch(88.5% 0.05 257.7)
-
Step 300
300
#9BC3FC
oklch(80.9% 0.092 257.2)
-
Step 400
400
#63A1FB
oklch(70.7% 0.147 257.7)
-
Step 500
500
#3486F8
oklch(63.1% 0.188 257.7)
-
Step 600
600 (this color)
#0C73EE
oklch(57.6% 0.204 257.6)
-
Step 700
700
#005BC3
oklch(49.1% 0.179 257.6)
-
Step 800
800
#004AA1
oklch(42.6% 0.155 257.6)
-
Step 900
900
#0D3F81
oklch(37.7% 0.123 257.6)
-
Step 950
950
#0A254B
oklch(26.8% 0.078 257.8)
#0C73EE 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) | #1281F2 | 0.036 |
| Deuteranopia (no green cones) | #006EEC | 0.014 |
| Tritanopia (no blue cones) | #0092A5 | 0.155 |
| Achromatopsia (no color) | #777777 | 0.204 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0C73EE
#0C73EE
oklch(57.6% 0.204 257.6)
- #A06E00
#A06E00
oklch(57.6% 0.12 77.3)
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 #0C73EE, closest first.
No curated palette has a color within ΔE 0.04 of #0C73EE.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.013
- Clear Blue #247AFD ΔE 0.031
- Royal Blue #4169E1 ΔE 0.038
- Bright Blue #0165FC ΔE 0.040
- Neon Blue #4361EE ΔE 0.048
- Azul #1D5DEC ΔE 0.052
- Warm Blue #4B57DB ΔE 0.075
- Windows Blue #3778BF ΔE 0.077
Use #0C73EE 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.