#286EEC
Closest named color: Cerulean Blue (#056EEE). oklch(56.9% 0.203 261.1), rgb(40, 110, 236).
Aa
White text reads best on this color (4.63:1).
About this color
#286EEC is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.203 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.013 away. White text reads best on it, at 4.63:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.203) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.53:1 |
| White text | 4.63:1 |
Values
| HEX | #286EEC |
| RGB | rgb(40, 110, 236) |
| HSL | hsl(219, 84%, 54%) |
| OKLCH | oklch(56.9% 0.203 261.1) |
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 #286EEC | 4.63:1 | AA | Lc -77.0 | Fine for body text |
| Black text on #286EEC | 4.53:1 | AA | Lc 32.5 | Non-text elements, placeholder text |
| #286EEC text on white | 4.63:1 | AA | Lc 71.5 | Content text, not long reading |
| #286EEC text on black | 4.53:1 | AA | Lc -30.1 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EAFC
oklch(93.5% 0.027 262.3)
-
Step 200
200
#C7DAFC
oklch(88.5% 0.051 262.1)
-
Step 300
300
#9FC2FC
oklch(81% 0.091 260.4)
-
Step 400
400
#6B9FFB
oklch(70.7% 0.146 261.1)
-
Step 500
500
#4384F8
oklch(63.1% 0.186 260.9)
-
Step 600
600 (this color)
#286EEC
oklch(56.9% 0.203 261.1)
-
Step 700
700
#1757C9
oklch(49.1% 0.189 261.1)
-
Step 800
800
#1548A3
oklch(42.7% 0.157 261.1)
-
Step 900
900
#183E81
oklch(37.8% 0.121 260.8)
-
Step 950
950
#0F254B
oklch(27% 0.076 260.5)
#286EEC 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) | #007EF0 | 0.039 |
| Deuteranopia (no green cones) | #006CEA | 0.016 |
| Tritanopia (no blue cones) | #008DA2 | 0.156 |
| Achromatopsia (no color) | #757575 | 0.203 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #286EEC
#286EEC
oklch(56.9% 0.203 261.1)
- #9A6E00
#9A6E00
oklch(56.8% 0.117 80.8)
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 #286EEC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.013
- Royal Blue #4169E1 ΔE 0.025
- Neon Blue #4361EE ΔE 0.034
- Bright Blue #0165FC ΔE 0.037
- Clear Blue #247AFD ΔE 0.038
- Azul #1D5DEC ΔE 0.042
- Warm Blue #4B57DB ΔE 0.061
- Electric Blue #0652FF ΔE 0.072
Use #286EEC 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.