#129DF2
Closest named color: Chefchaouen Blue (#4895EF). oklch(67.2% 0.163 244.5), rgb(18, 157, 242).
Aa
Black text reads best on this color (7.13:1).
About this color
#129DF2 is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.163 and its hue 245°. 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 7.13:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.163) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.13:1 |
| White text | 2.94:1 |
Values
| HEX | #129DF2 |
| RGB | rgb(18, 157, 242) |
| HSL | hsl(203, 90%, 51%) |
| OKLCH | oklch(67.2% 0.163 244.5) |
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 #129DF2 | 2.94:1 | Fails | Lc -60.6 | Content text, not long reading |
| Black text on #129DF2 | 7.13:1 | AAA | Lc 48.7 | Large or bold text, headings |
| #129DF2 text on white | 2.94:1 | Fails | Lc 55.3 | Large or bold text, headings |
| #129DF2 text on black | 7.13:1 | AAA | Lc -46.5 | 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
#EEF7FE
oklch(97.1% 0.013 241)
-
Step 100
100
#DAEDFD
oklch(93.7% 0.03 243.4)
-
Step 200
200
#BADEFD
oklch(88.5% 0.057 244.5)
-
Step 300
300
#86C8FE
oklch(80.9% 0.102 244.2)
-
Step 400
400 (this color)
#129DF2
oklch(67.2% 0.163 244.5)
-
Step 500
500
#0090E1
oklch(63.1% 0.158 244.7)
-
Step 600
600
#0079BE
oklch(55.6% 0.139 244.6)
-
Step 700
700
#0066A1
oklch(49.2% 0.123 244.5)
-
Step 800
800
#005385
oklch(42.7% 0.107 244.8)
-
Step 900
900
#00456F
oklch(37.6% 0.093 244.3)
-
Step 950
950
#002945
oklch(27.1% 0.068 244.5)
#129DF2 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) | #74A0F6 | 0.068 |
| Deuteranopia (no green cones) | #558EF0 | 0.048 |
| Tritanopia (no blue cones) | #00B2BC | 0.113 |
| Achromatopsia (no color) | #969696 | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #129DF2
#129DF2
oklch(67.2% 0.163 244.5)
- #D47E00
#D47E00
oklch(67.1% 0.151 64.4)
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 #129DF2, 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 0.042
- Dark Sky Blue #448EE4 ΔE 0.043
- Cornflower Blue #6495ED ΔE 0.050
- Soft Blue #6488EA ΔE 0.067
- Water Blue #0E87CC ΔE 0.077
- Deep Sky Blue #00BFFF ΔE 0.092
- Faded Blue #658CBB ΔE 0.092
Use #129DF2 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.