#0091E2
Closest named color: Dark Sky Blue (#448EE4). oklch(63.4% 0.158 244.5), rgb(0, 145, 226).
Aa
Black text reads best on this color (6.14:1).
About this color
#0091E2 is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.158 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.028 away. Black text reads best on it, at 6.14:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.158) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.14:1 |
| White text | 3.41:1 |
Values
| HEX | #0091E2 |
| RGB | rgb(0, 145, 226) |
| HSL | hsl(202, 100%, 44%) |
| OKLCH | oklch(63.4% 0.158 244.5) |
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 #0091E2 | 3.41:1 | AA large text | Lc -66.4 | Content text, not long reading |
| Black text on #0091E2 | 6.14:1 | AA | Lc 43.1 | Non-text elements, placeholder text |
| #0091E2 text on white | 3.41:1 | AA large text | Lc 60.9 | Content text, not long reading |
| #0091E2 text on black | 6.14:1 | AA | Lc -40.8 | 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
#DEECF8
oklch(93.6% 0.022 243.8)
-
Step 200
200
#C2DDF4
oklch(88.5% 0.043 244)
-
Step 300
300
#96C7F0
oklch(81% 0.078 244.2)
-
Step 400
400
#56A8E8
oklch(70.7% 0.124 244.4)
-
Step 500
500 (this color)
#0091E2
oklch(63.4% 0.158 244.5)
-
Step 600
600
#0079BE
oklch(55.6% 0.139 244.6)
-
Step 700
700
#0066A1
oklch(49.2% 0.123 244.5)
-
Step 800
800
#005385
oklch(42.7% 0.107 244.8)
-
Step 900
900
#00456F
oklch(37.6% 0.093 244.3)
-
Step 950
950
#022944
oklch(27.1% 0.065 244.6)
#0091E2 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) | #6994E5 | 0.064 |
| Deuteranopia (no green cones) | #4B83E0 | 0.045 |
| Tritanopia (no blue cones) | #00A5AF | 0.109 |
| Achromatopsia (no color) | #8B8B8B | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0091E2
#0091E2
oklch(63.4% 0.158 244.5)
- #C47400
#C47400
oklch(63.3% 0.143 64.3)
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 #0091E2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.028
- Water Blue #0E87CC ΔE 0.039
- Chefchaouen Blue #4895EF ΔE 0.040
- Dodger Blue #1E90FF ΔE 0.045
- Soft Blue #6488EA ΔE 0.062
- Cornflower Blue #6495ED ΔE 0.062
- Cool Blue #4984B8 ΔE 0.068
- Blue NCS #118AB2 ΔE 0.073
Use #0091E2 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.