#159CFE
Closest named color: Chefchaouen Blue (#4895EF). oklch(67.7% 0.178 248.3), rgb(21, 156, 254).
Aa
Black text reads best on this color (7.21:1).
About this color
#159CFE is a medium-light, vivid blue. In OKLCH its lightness is 68%, its chroma 0.178 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.032 away. Black text reads best on it, at 7.21:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.178) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.21:1 |
| White text | 2.90:1 |
Values
| HEX | #159CFE |
| RGB | rgb(21, 156, 254) |
| HSL | hsl(205, 99%, 54%) |
| OKLCH | oklch(67.7% 0.178 248.3) |
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 #159CFE | 2.90:1 | Fails | Lc -60.1 | Content text, not long reading |
| Black text on #159CFE | 7.21:1 | AAA | Lc 49.2 | Large or bold text, headings |
| #159CFE text on white | 2.90:1 | Fails | Lc 54.8 | Large or bold text, headings |
| #159CFE text on black | 7.21:1 | AAA | Lc -47.0 | 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
#EEF7FF
oklch(97.2% 0.014 244.7)
-
Step 100
100
#DAECFF
oklch(93.6% 0.032 249.6)
-
Step 200
200
#BBDDFF
oklch(88.4% 0.059 248.5)
-
Step 300
300
#8CC6FF
oklch(80.8% 0.101 248.7)
-
Step 400
400 (this color)
#159CFE
oklch(67.7% 0.178 248.3)
-
Step 500
500
#008EEA
oklch(63.2% 0.17 248)
-
Step 600
600
#0077C6
oklch(55.6% 0.15 248.2)
-
Step 700
700
#0064A8
oklch(49.2% 0.133 248.3)
-
Step 800
800
#00528A
oklch(42.8% 0.115 247.8)
-
Step 900
900
#004474
oklch(37.7% 0.101 247.8)
-
Step 950
950
#002848
oklch(27% 0.073 248.1)
#159CFE 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) | #6BA2FF | 0.059 |
| Deuteranopia (no green cones) | #478FFC | 0.037 |
| Tritanopia (no blue cones) | #00B4C1 | 0.127 |
| Achromatopsia (no color) | #979797 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #159CFE
#159CFE
oklch(67.7% 0.178 248.3)
- #D28300
#D28300
oklch(67.7% 0.148 68.2)
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 #159CFE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.032
- Dodger Blue #1E90FF ΔE 0.032
- Dark Sky Blue #448EE4 ΔE 0.049
- Cornflower Blue #6495ED ΔE 0.051
- Soft Blue #6488EA ΔE 0.067
- Clear Blue #247AFD ΔE 0.087
- Water Blue #0E87CC ΔE 0.088
- Deep Sky Blue #00BFFF ΔE 0.095
Use #159CFE 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.