#266CAF
Closest named color: Mid Blue (#276AB3). oklch(52.2% 0.126 250.9), rgb(38, 108, 175).
Aa
White text reads best on this color (5.45:1).
About this color
#266CAF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.126 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.009 away. White text reads best on it, at 5.45:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.84:1 |
| White text | 5.45:1 |
Values
| HEX | #266CAF |
| RGB | rgb(38, 108, 175) |
| HSL | hsl(209, 64%, 42%) |
| OKLCH | oklch(52.2% 0.126 250.9) |
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 #266CAF | 5.45:1 | AA | Lc -82.2 | Fine for body text |
| Black text on #266CAF | 3.84:1 | AA large text | Lc 27.2 | Dividers and decoration only |
| #266CAF text on white | 5.45:1 | AA | Lc 76.9 | Fine for body text |
| #266CAF text on black | 3.84:1 | AA large text | Lc -24.9 | 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 700.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C9DBEF
oklch(88.4% 0.034 251)
-
Step 300
300
#A4C4E7
oklch(80.9% 0.061 250.9)
-
Step 400
400
#71A5DC
oklch(70.7% 0.098 250.7)
-
Step 500
500
#4A8DD2
oklch(63.1% 0.125 251)
-
Step 600
600
#2976BF
oklch(55.6% 0.135 250.8)
-
Step 700
700 (this color)
#266CAF
oklch(52.2% 0.126 250.9)
-
Step 800
800
#195186
oklch(42.7% 0.105 250.8)
-
Step 900
900
#1C436B
oklch(37.6% 0.082 251.4)
-
Step 950
950
#11283F
oklch(27.1% 0.052 250.3)
#266CAF 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) | #4C70B2 | 0.038 |
| Deuteranopia (no green cones) | #3764AE | 0.024 |
| Tritanopia (no blue cones) | #007C85 | 0.094 |
| Achromatopsia (no color) | #696969 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #266CAF
#266CAF
oklch(52.2% 0.126 250.9)
- #915C00
#915C00
oklch(52.1% 0.112 70.8)
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 #266CAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.009
- French Blue #436BAD ΔE 0.024
- Flat Blue #3C73A8 ΔE 0.032
- Muted Blue #3B719F ΔE 0.036
- Ocean Blue #03719C ΔE 0.039
- Nice Blue #107AB0 ΔE 0.040
- Windows Blue #3778BF ΔE 0.043
- Peacock Blue #016795 ΔE 0.047
Use #266CAF 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.