#0191E5
Closest named color: Dark Sky Blue (#448EE4). oklch(63.5% 0.161 245.4), rgb(1, 145, 229).
Aa
Black text reads best on this color (6.18:1).
About this color
#0191E5 is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.161 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.027 away. Black text reads best on it, at 6.18:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.161) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.18:1 |
| White text | 3.39:1 |
Values
| HEX | #0191E5 |
| RGB | rgb(1, 145, 229) |
| HSL | hsl(202, 99%, 45%) |
| OKLCH | oklch(63.5% 0.161 245.4) |
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 #0191E5 | 3.39:1 | AA large text | Lc -66.2 | Content text, not long reading |
| Black text on #0191E5 | 6.18:1 | AA | Lc 43.3 | Non-text elements, placeholder text |
| #0191E5 text on white | 3.39:1 | AA large text | Lc 60.7 | Content text, not long reading |
| #0191E5 text on black | 6.18:1 | AA | Lc -41.0 | Non-text elements, placeholder text |
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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DEECF9
oklch(93.6% 0.023 246)
-
Step 200
200
#C2DDF5
oklch(88.5% 0.044 245.1)
-
Step 300
300
#96C6F1
oklch(80.8% 0.079 246)
-
Step 400
400
#56A8EA
oklch(70.8% 0.126 245.2)
-
Step 500
500 (this color)
#0191E5
oklch(63.5% 0.161 245.4)
-
Step 600
600
#0079C0
oklch(55.7% 0.141 245.3)
-
Step 700
700
#0065A2
oklch(49% 0.125 245.5)
-
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
#022945
oklch(27.2% 0.067 245.5)
#0191E5 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) | #6895E8 | 0.063 |
| Deuteranopia (no green cones) | #4883E3 | 0.043 |
| Tritanopia (no blue cones) | #00A6B0 | 0.113 |
| Achromatopsia (no color) | #8B8B8B | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0191E5
#0191E5
oklch(63.5% 0.161 245.4)
- #C47600
#C47600
oklch(63.6% 0.142 65.6)
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 #0191E5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.027
- Chefchaouen Blue #4895EF ΔE 0.037
- Dodger Blue #1E90FF ΔE 0.041
- Water Blue #0E87CC ΔE 0.043
- Soft Blue #6488EA ΔE 0.060
- Cornflower Blue #6495ED ΔE 0.061
- Cool Blue #4984B8 ΔE 0.072
- Clear Blue #247AFD ΔE 0.074
Use #0191E5 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.