#2366E7
Closest named color: Cerulean Blue (#056EEE). oklch(54.8% 0.207 261.8), rgb(35, 102, 231).
Aa
White text reads best on this color (5.08:1).
About this color
#2366E7 is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.207 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.021 away. White text reads best on it, at 5.08:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.207) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.12:1 |
| White text | 5.08:1 |
Values
| HEX | #2366E7 |
| RGB | rgb(35, 102, 231) |
| HSL | hsl(219, 80%, 52%) |
| OKLCH | oklch(54.8% 0.207 261.8) |
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 #2366E7 | 5.08:1 | AA | Lc -79.8 | Fine for body text |
| Black text on #2366E7 | 4.12:1 | AA large text | Lc 29.7 | Dividers and decoration only |
| #2366E7 text on white | 5.08:1 | AA | Lc 74.4 | Content text, not long reading |
| #2366E7 text on black | 4.12:1 | AA large text | Lc -27.3 | 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 600.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EAFD
oklch(93.5% 0.028 263.4)
-
Step 200
200
#C7DAFC
oklch(88.5% 0.051 262.1)
-
Step 300
300
#A0C1FD
oklch(80.9% 0.093 262.1)
-
Step 400
400
#6B9FFD
oklch(70.8% 0.149 261.4)
-
Step 500
500
#4483FB
oklch(63.2% 0.191 261.8)
-
Step 600
600 (this color)
#2366E7
oklch(54.8% 0.207 261.8)
-
Step 700
700
#1956CB
oklch(49.1% 0.192 261.8)
-
Step 800
800
#1747A4
oklch(42.7% 0.159 261.8)
-
Step 900
900
#193D82
oklch(37.7% 0.124 261.8)
-
Step 950
950
#0F244C
oklch(26.9% 0.079 261.8)
#2366E7 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) | #0077EB | 0.041 |
| Deuteranopia (no green cones) | #0066E5 | 0.013 |
| Tritanopia (no blue cones) | #00869C | 0.159 |
| Achromatopsia (no color) | #6E6E6E | 0.207 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2366E7
#2366E7
oklch(54.8% 0.207 261.8)
- #926900
#926900
oklch(54.8% 0.113 81.6)
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 #2366E7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.021
- Azul #1D5DEC ΔE 0.023
- Royal Blue #4169E1 ΔE 0.027
- Neon Blue #4361EE ΔE 0.029
- Bright Blue #0165FC ΔE 0.033
- Warm Blue #4B57DB ΔE 0.047
- Clear Blue #247AFD ΔE 0.058
- Electric Blue #0652FF ΔE 0.059
Use #2366E7 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.