#0159C4
Closest named color: Blue Blue (#2242C7). oklch(48.8% 0.182 258.3), rgb(1, 89, 196).
Aa
White text reads best on this color (6.50:1).
About this color
#0159C4 is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.182 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.052 away. White text reads best on it, at 6.50:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.182) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 3.22:1 |
| White text | 6.50:1 |
Values
| HEX | #0159C4 |
| RGB | rgb(1, 89, 196) |
| HSL | hsl(213, 99%, 39%) |
| OKLCH | oklch(48.8% 0.182 258.3) |
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 #0159C4 | 6.50:1 | AA | Lc -86.5 | Fine for body text |
| Black text on #0159C4 | 3.22:1 | AA large text | Lc 22.7 | Dividers and decoration only |
| #0159C4 text on white | 6.50:1 | AA | Lc 81.4 | Fine for body text |
| #0159C4 text on black | 3.22:1 | AA large text | Lc -20.5 | Dividers and decoration only |
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 700.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C6DBFA
oklch(88.6% 0.048 258)
-
Step 300
300
#9EC3FA
oklch(81% 0.088 258.1)
-
Step 400
400
#67A1F7
oklch(70.7% 0.141 258.1)
-
Step 500
500
#3C86F4
oklch(63% 0.181 258.5)
-
Step 600
600
#146DE3
oklch(55.6% 0.196 258.3)
-
Step 700
700 (this color)
#0159C4
oklch(48.8% 0.182 258.3)
-
Step 800
800
#0A4A9F
oklch(42.6% 0.151 258.3)
-
Step 900
900
#133F7E
oklch(37.6% 0.117 258.2)
-
Step 950
950
#0D254A
oklch(26.9% 0.075 258.9)
#0159C4 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) | #0066C8 | 0.034 |
| Deuteranopia (no green cones) | #0056C2 | 0.008 |
| Tritanopia (no blue cones) | #007486 | 0.137 |
| Achromatopsia (no color) | #5E5E5E | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0159C4
#0159C4
oklch(48.8% 0.182 258.3)
- #7F5700
#7F5700
oklch(48.8% 0.102 77.8)
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 #0159C4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.052
- Mid Blue #276AB3 ΔE 0.060
- Azul #1D5DEC ΔE 0.065
- Warm Blue #4B57DB ΔE 0.066
- Royal Blue #4169E1 ΔE 0.077
- Majorelle Blue #3F37C9 ΔE 0.078
- French Blue #436BAD ΔE 0.081
- Cerulean Blue #056EEE ΔE 0.083
Use #0159C4 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.