#239BFE
Closest named color: Chefchaouen Blue (#4895EF). oklch(67.6% 0.177 249.6), rgb(35, 155, 254).
Aa
Black text reads best on this color (7.19:1).
About this color
#239BFE is a medium-light, vivid blue. In OKLCH its lightness is 68%, its chroma 0.177 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.029 away. Black text reads best on it, at 7.19:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.177) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.19:1 |
| White text | 2.92:1 |
Values
| HEX | #239BFE |
| RGB | rgb(35, 155, 254) |
| HSL | hsl(207, 99%, 57%) |
| OKLCH | oklch(67.6% 0.177 249.6) |
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 #239BFE | 2.92:1 | Fails | Lc -60.3 | Content text, not long reading |
| Black text on #239BFE | 7.19:1 | AAA | Lc 49.0 | Large or bold text, headings |
| #239BFE text on white | 2.92:1 | Fails | Lc 55.0 | Large or bold text, headings |
| #239BFE text on black | 7.19:1 | AAA | Lc -46.8 | Large or bold text, headings |
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 400.
-
Step 50
50
#EEF6FF
oklch(97% 0.015 251.2)
-
Step 100
100
#DAECFF
oklch(93.6% 0.032 249.6)
-
Step 200
200
#BCDDFF
oklch(88.5% 0.059 249.3)
-
Step 300
300
#8EC6FF
oklch(80.9% 0.1 249.6)
-
Step 400
400 (this color)
#239BFE
oklch(67.6% 0.177 249.6)
-
Step 500
500
#008DEE
oklch(63.2% 0.176 249.3)
-
Step 600
600
#0076C9
oklch(55.6% 0.155 249.4)
-
Step 700
700
#0063AA
oklch(49.1% 0.137 249.4)
-
Step 800
800
#00518D
oklch(42.7% 0.12 249.5)
-
Step 900
900
#004377
oklch(37.7% 0.106 249.9)
-
Step 950
950
#002749
oklch(26.8% 0.076 249.9)
#239BFE 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) | #6AA1FF | 0.055 |
| Deuteranopia (no green cones) | #478EFC | 0.035 |
| Tritanopia (no blue cones) | #00B3C0 | 0.128 |
| Achromatopsia (no color) | #979797 | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #239BFE
#239BFE
oklch(67.6% 0.177 249.6)
- #D08400
#D08400
oklch(67.7% 0.147 69.6)
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 #239BFE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.029
- Dodger Blue #1E90FF ΔE 0.030
- Dark Sky Blue #448EE4 ΔE 0.047
- Cornflower Blue #6495ED ΔE 0.048
- Soft Blue #6488EA ΔE 0.063
- Clear Blue #247AFD ΔE 0.085
- Water Blue #0E87CC ΔE 0.088
- Cornflower #6A79F7 ΔE 0.093
Use #239BFE 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.