#129FD7
Closest named color: Chefchaouen Blue (#4895EF). oklch(66.2% 0.134 233.2), rgb(18, 159, 215).
Aa
Black text reads best on this color (6.96:1).
About this color
#129FD7 is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.134 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.056 away. Black text reads best on it, at 6.96:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.96:1 |
| White text | 3.01:1 |
Values
| HEX | #129FD7 |
| RGB | rgb(18, 159, 215) |
| HSL | hsl(197, 85%, 46%) |
| OKLCH | oklch(66.2% 0.134 233.2) |
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 #129FD7 | 3.01:1 | AA large text | Lc -61.6 | Content text, not long reading |
| Black text on #129FD7 | 6.96:1 | AA | Lc 47.8 | Large or bold text, headings |
| #129FD7 text on white | 3.01:1 | AA large text | Lc 56.3 | Large or bold text, headings |
| #129FD7 text on black | 6.96:1 | AA | Lc -45.5 | 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 500.
-
Step 50
50
#F0F7FA
oklch(97.2% 0.008 225.1)
-
Step 100
100
#DEECF5
oklch(93.5% 0.019 235.7)
-
Step 200
200
#C3DEEE
oklch(88.6% 0.036 233.8)
-
Step 300
300
#97C8E5
oklch(80.8% 0.066 234.6)
-
Step 400
400
#56ABD7
oklch(70.6% 0.104 233.5)
-
Step 500
500 (this color)
#129FD7
oklch(66.2% 0.134 233.2)
-
Step 600
600
#007DAC
oklch(55.5% 0.116 233.8)
-
Step 700
700
#006991
oklch(49% 0.102 233.6)
-
Step 800
800
#005677
oklch(42.6% 0.088 233.1)
-
Step 900
900
#004864
oklch(37.8% 0.078 232.8)
-
Step 950
950
#012A3D
oklch(26.9% 0.056 234.3)
#129FD7 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) | #839EDA | 0.084 |
| Deuteranopia (no green cones) | #6B8DD6 | 0.070 |
| Tritanopia (no blue cones) | #00AEB2 | 0.081 |
| Achromatopsia (no color) | #949494 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #129FD7
#129FD7
oklch(66.2% 0.134 233.2)
- #D1793B
#D1793B
oklch(66.2% 0.134 53.1)
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 #129FD7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.056
- Dark Sky Blue #448EE4 ΔE 0.057
- Turquoise Blue #06B1C4 ΔE 0.066
- Water Blue #0E87CC ΔE 0.067
- Cornflower Blue #6495ED ΔE 0.068
- Faded Blue #658CBB ΔE 0.070
- Blue NCS #118AB2 ΔE 0.074
- Cool Blue #4984B8 ΔE 0.079
Use #129FD7 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.