#129AF8
Closest named color: Chefchaouen Blue (#4895EF). oklch(66.8% 0.173 247.4), rgb(18, 154, 248).
Aa
Black text reads best on this color (7.00:1).
About this color
#129AF8 is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.173 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.027 away. Black text reads best on it, at 7.00:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.173) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.00:1 |
| White text | 2.99:1 |
Values
| HEX | #129AF8 |
| RGB | rgb(18, 154, 248) |
| HSL | hsl(205, 94%, 52%) |
| OKLCH | oklch(66.8% 0.173 247.4) |
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 #129AF8 | 2.99:1 | Fails | Lc -61.3 | Content text, not long reading |
| Black text on #129AF8 | 7.00:1 | AAA | Lc 48.0 | Large or bold text, headings |
| #129AF8 text on white | 2.99:1 | Fails | Lc 56.0 | Large or bold text, headings |
| #129AF8 text on black | 7.00:1 | AAA | Lc -45.8 | 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 500.
-
Step 50
50
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DDECFA
oklch(93.6% 0.025 246.2)
-
Step 200
200
#C1DDF7
oklch(88.5% 0.047 246.4)
-
Step 300
300
#94C6F5
oklch(80.8% 0.085 247.4)
-
Step 400
400
#53A7F0
oklch(70.8% 0.135 247.3)
-
Step 500
500 (this color)
#129AF8
oklch(66.8% 0.173 247.4)
-
Step 600
600
#0077C4
oklch(55.5% 0.148 247.6)
-
Step 700
700
#0064A6
oklch(49.1% 0.131 247.6)
-
Step 800
800
#005289
oklch(42.7% 0.113 247.3)
-
Step 900
900
#004473
oklch(37.7% 0.1 247.4)
-
Step 950
950
#002847
oklch(27% 0.072 247.4)
#129AF8 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) | #6C9FFC | 0.061 |
| Deuteranopia (no green cones) | #498CF6 | 0.041 |
| Tritanopia (no blue cones) | #00B1BD | 0.123 |
| Achromatopsia (no color) | #959595 | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #129AF8
#129AF8
oklch(66.8% 0.173 247.4)
- #CF8000
#CF8000
oklch(66.8% 0.147 67.5)
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 #129AF8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.027
- Dodger Blue #1E90FF ΔE 0.030
- Dark Sky Blue #448EE4 ΔE 0.041
- Cornflower Blue #6495ED ΔE 0.050
- Soft Blue #6488EA ΔE 0.063
- Water Blue #0E87CC ΔE 0.078
- Clear Blue #247AFD ΔE 0.084
- Cornflower #6A79F7 ΔE 0.094
Use #129AF8 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.