#129AF1
Closest named color: Chefchaouen Blue (#4895EF). oklch(66.4% 0.165 245.6), rgb(18, 154, 241).
Aa
Black text reads best on this color (6.91:1).
About this color
#129AF1 is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.165 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.026 away. Black text reads best on it, at 6.91:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.165) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.91:1 |
| White text | 3.03:1 |
Values
| HEX | #129AF1 |
| RGB | rgb(18, 154, 241) |
| HSL | hsl(203, 89%, 51%) |
| OKLCH | oklch(66.4% 0.165 245.6) |
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 #129AF1 | 3.03:1 | AA large text | Lc -61.9 | Content text, not long reading |
| Black text on #129AF1 | 6.91:1 | AA | Lc 47.5 | Large or bold text, headings |
| #129AF1 text on white | 3.03:1 | AA large text | Lc 56.5 | Large or bold text, headings |
| #129AF1 text on black | 6.91:1 | AA | Lc -45.3 | 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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DEECF9
oklch(93.6% 0.023 246)
-
Step 200
200
#C2DDF6
oklch(88.6% 0.045 246.3)
-
Step 300
300
#95C7F2
oklch(81% 0.081 245)
-
Step 400
400
#54A8EC
oklch(70.8% 0.129 245.5)
-
Step 500
500 (this color)
#129AF1
oklch(66.4% 0.165 245.6)
-
Step 600
600
#0078C0
oklch(55.5% 0.142 245.8)
-
Step 700
700
#0065A2
oklch(49% 0.125 245.5)
-
Step 800
800
#005386
oklch(42.8% 0.108 245.3)
-
Step 900
900
#004571
oklch(37.8% 0.096 245.5)
-
Step 950
950
#002945
oklch(27.1% 0.068 244.5)
#129AF1 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) | #709EF5 | 0.065 |
| Deuteranopia (no green cones) | #508CEF | 0.044 |
| Tritanopia (no blue cones) | #00AFBA | 0.115 |
| Achromatopsia (no color) | #949494 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #129AF1
#129AF1
oklch(66.4% 0.165 245.6)
- #D07D00
#D07D00
oklch(66.4% 0.149 65.3)
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 #129AF1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.026
- Dodger Blue #1E90FF ΔE 0.036
- Dark Sky Blue #448EE4 ΔE 0.037
- Cornflower Blue #6495ED ΔE 0.049
- Soft Blue #6488EA ΔE 0.063
- Water Blue #0E87CC ΔE 0.070
- Clear Blue #247AFD ΔE 0.087
- Faded Blue #658CBB ΔE 0.090
Use #129AF1 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.