#159EF7
Closest named color: Chefchaouen Blue (#4895EF). oklch(67.7% 0.168 245.7), rgb(21, 158, 247).
Aa
Black text reads best on this color (7.26:1).
About this color
#159EF7 is a medium-light, vivid blue. In OKLCH its lightness is 68%, its chroma 0.168 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.030 away. Black text reads best on it, at 7.26:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.168) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.26:1 |
| White text | 2.89:1 |
Values
| HEX | #159EF7 |
| RGB | rgb(21, 158, 247) |
| HSL | hsl(204, 93%, 53%) |
| OKLCH | oklch(67.7% 0.168 245.7) |
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 #159EF7 | 2.89:1 | Fails | Lc -59.8 | Large or bold text, headings |
| Black text on #159EF7 | 7.26:1 | AAA | Lc 49.5 | Large or bold text, headings |
| #159EF7 text on white | 2.89:1 | Fails | Lc 54.6 | Large or bold text, headings |
| #159EF7 text on black | 7.26:1 | AAA | Lc -47.3 | 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 400.
-
Step 50
50
#EEF7FF
oklch(97.2% 0.014 244.7)
-
Step 100
100
#DAEDFD
oklch(93.7% 0.03 243.4)
-
Step 200
200
#BADEFE
oklch(88.5% 0.058 245.4)
-
Step 300
300
#88C8FF
oklch(81% 0.102 245.4)
-
Step 400
400 (this color)
#159EF7
oklch(67.7% 0.168 245.7)
-
Step 500
500
#008FE4
oklch(63% 0.162 246)
-
Step 600
600
#0078C0
oklch(55.5% 0.142 245.8)
-
Step 700
700
#0065A3
oklch(49.1% 0.126 245.9)
-
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
#002846
oklch(26.9% 0.07 246.6)
#159EF7 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) | #73A2FB | 0.066 |
| Deuteranopia (no green cones) | #528FF5 | 0.046 |
| Tritanopia (no blue cones) | #00B4BF | 0.117 |
| Achromatopsia (no color) | #989898 | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #159EF7
#159EF7
oklch(67.7% 0.168 245.7)
- #D58100
#D58100
oklch(67.8% 0.151 65.8)
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 #159EF7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.030
- Dodger Blue #1E90FF ΔE 0.041
- Dark Sky Blue #448EE4 ΔE 0.047
- Cornflower Blue #6495ED ΔE 0.050
- Soft Blue #6488EA ΔE 0.068
- Water Blue #0E87CC ΔE 0.083
- Deep Sky Blue #00BFFF ΔE 0.089
- Clear Blue #247AFD ΔE 0.095
Use #159EF7 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.