#266AEA
Closest named color: Cerulean Blue (#056EEE). oklch(55.9% 0.206 261.6), rgb(38, 106, 234).
Aa
White text reads best on this color (4.84:1).
About this color
#266AEA is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.206 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.014 away. White text reads best on it, at 4.84:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.206) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.33:1 |
| White text | 4.84:1 |
Values
| HEX | #266AEA |
| RGB | rgb(38, 106, 234) |
| HSL | hsl(219, 82%, 53%) |
| OKLCH | oklch(55.9% 0.206 261.6) |
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 #266AEA | 4.84:1 | AA | Lc -78.4 | Fine for body text |
| Black text on #266AEA | 4.33:1 | AA large text | Lc 31.1 | Non-text elements, placeholder text |
| #266AEA text on white | 4.84:1 | AA | Lc 72.9 | Content text, not long reading |
| #266AEA text on black | 4.33:1 | AA large text | Lc -28.7 | 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
#E0EAFC
oklch(93.5% 0.027 262.3)
-
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
#6B9FFC
oklch(70.7% 0.148 261.3)
-
Step 500
500
#4483FA
oklch(63.1% 0.189 261.7)
-
Step 600
600 (this color)
#266AEA
oklch(55.9% 0.206 261.6)
-
Step 700
700
#1856CB
oklch(49.1% 0.192 261.7)
-
Step 800
800
#1647A4
oklch(42.6% 0.159 261.6)
-
Step 900
900
#193D82
oklch(37.7% 0.124 261.8)
-
Step 950
950
#0F244C
oklch(26.9% 0.079 261.8)
#266AEA 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) | #007BEE | 0.041 |
| Deuteranopia (no green cones) | #0069E8 | 0.015 |
| Tritanopia (no blue cones) | #008AA0 | 0.158 |
| Achromatopsia (no color) | #717171 | 0.206 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #266AEA
#266AEA
oklch(55.9% 0.206 261.6)
- #966C00
#966C00
oklch(55.9% 0.115 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 #266AEA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.014
- Royal Blue #4169E1 ΔE 0.024
- Neon Blue #4361EE ΔE 0.029
- Azul #1D5DEC ΔE 0.032
- Bright Blue #0165FC ΔE 0.033
- Clear Blue #247AFD ΔE 0.047
- Warm Blue #4B57DB ΔE 0.053
- Electric Blue #0652FF ΔE 0.065
Use #266AEA 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.