#159BF5
Closest named color: Chefchaouen Blue (#4895EF). oklch(66.9% 0.168 246.4), rgb(21, 155, 245).
Aa
Black text reads best on this color (7.03:1).
About this color
#159BF5 is a medium-light, vivid blue. In OKLCH its lightness is 67%, 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 0.026 away. Black text reads best on it, at 7.03:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.168) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.03:1 |
| White text | 2.98:1 |
Values
| HEX | #159BF5 |
| RGB | rgb(21, 155, 245) |
| HSL | hsl(204, 92%, 52%) |
| OKLCH | oklch(66.9% 0.168 246.4) |
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 #159BF5 | 2.98:1 | Fails | Lc -61.2 | Content text, not long reading |
| Black text on #159BF5 | 7.03:1 | AAA | Lc 48.2 | Large or bold text, headings |
| #159BF5 text on white | 2.98:1 | Fails | Lc 55.8 | Large or bold text, headings |
| #159BF5 text on black | 7.03:1 | AAA | Lc -46.0 | 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 500.
-
Step 50
50
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DEECF9
oklch(93.6% 0.023 246)
-
Step 200
200
#C1DDF6
oklch(88.5% 0.046 245.3)
-
Step 300
300
#95C6F3
oklch(80.8% 0.082 246.7)
-
Step 400
400
#53A7EE
oklch(70.7% 0.133 246.6)
-
Step 500
500 (this color)
#159BF5
oklch(66.9% 0.168 246.4)
-
Step 600
600
#0078C2
oklch(55.6% 0.145 246.5)
-
Step 700
700
#0065A4
oklch(49.2% 0.127 246.3)
-
Step 800
800
#005287
oklch(42.6% 0.111 246.5)
-
Step 900
900
#004472
oklch(37.6% 0.099 246.8)
-
Step 950
950
#002846
oklch(26.9% 0.07 246.6)
#159BF5 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) | #6FA0F9 | 0.064 |
| Deuteranopia (no green cones) | #4E8DF3 | 0.042 |
| Tritanopia (no blue cones) | #00B1BC | 0.119 |
| Achromatopsia (no color) | #959595 | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #159BF5
#159BF5
oklch(66.9% 0.168 246.4)
- #D17F00
#D17F00
oklch(66.9% 0.149 66.1)
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 #159BF5, 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 0.035
- Dark Sky Blue #448EE4 ΔE 0.040
- Cornflower Blue #6495ED ΔE 0.049
- Soft Blue #6488EA ΔE 0.064
- Water Blue #0E87CC ΔE 0.076
- Clear Blue #247AFD ΔE 0.088
- Faded Blue #658CBB ΔE 0.094
Use #159BF5 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.