#266DED
Closest named color: Cerulean Blue (#056EEE). oklch(56.8% 0.206 261.1), rgb(38, 109, 237).
Aa
White text reads best on this color (4.67:1).
About this color
#266DED is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.206 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.011 away. White text reads best on it, at 4.67:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.206) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.49:1 |
| White text | 4.67:1 |
Values
| HEX | #266DED |
| RGB | rgb(38, 109, 237) |
| HSL | hsl(219, 85%, 54%) |
| OKLCH | oklch(56.8% 0.206 261.1) |
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 #266DED | 4.67:1 | AA | Lc -77.3 | Fine for body text |
| Black text on #266DED | 4.49:1 | AA large text | Lc 32.3 | Non-text elements, placeholder text |
| #266DED text on white | 4.67:1 | AA | Lc 71.8 | Content text, not long reading |
| #266DED text on black | 4.49:1 | AA large text | Lc -29.9 | 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
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C6DAFC
oklch(88.4% 0.052 261.1)
-
Step 300
300
#9FC1FD
oklch(80.8% 0.093 261.6)
-
Step 400
400
#6A9FFC
oklch(70.7% 0.148 261)
-
Step 500
500
#4283FA
oklch(63% 0.19 261.3)
-
Step 600
600 (this color)
#266DED
oklch(56.8% 0.206 261.1)
-
Step 700
700
#1557CB
oklch(49.2% 0.191 261.1)
-
Step 800
800
#1448A4
oklch(42.8% 0.158 261)
-
Step 900
900
#183D82
oklch(37.7% 0.124 261.4)
-
Step 950
950
#0F254C
oklch(27.1% 0.078 260.9)
#266DED 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) | #007DF1 | 0.039 |
| Deuteranopia (no green cones) | #006BEB | 0.015 |
| Tritanopia (no blue cones) | #008DA2 | 0.159 |
| Achromatopsia (no color) | #747474 | 0.206 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #266DED
#266DED
oklch(56.8% 0.206 261.1)
- #996E00
#996E00
oklch(56.7% 0.117 81.4)
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 #266DED, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.011
- Royal Blue #4169E1 ΔE 0.026
- Neon Blue #4361EE ΔE 0.032
- Bright Blue #0165FC ΔE 0.034
- Clear Blue #247AFD ΔE 0.039
- Azul #1D5DEC ΔE 0.039
- Warm Blue #4B57DB ΔE 0.060
- Electric Blue #0652FF ΔE 0.069
Use #266DED 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.