#0B91D7
Closest named color: Water Blue (#0E87CC). oklch(62.8% 0.145 241.2), rgb(11, 145, 215).
Aa
Black text reads best on this color (6.04:1).
About this color
#0B91D7 is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.145 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.030 away. Black text reads best on it, at 6.04:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 6.04:1 |
| White text | 3.47:1 |
Values
| HEX | #0B91D7 |
| RGB | rgb(11, 145, 215) |
| HSL | hsl(201, 90%, 44%) |
| OKLCH | oklch(62.8% 0.145 241.2) |
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 #0B91D7 | 3.47:1 | AA large text | Lc -67.1 | Content text, not long reading |
| Black text on #0B91D7 | 6.04:1 | AA | Lc 42.4 | Non-text elements, placeholder text |
| #0B91D7 text on white | 3.47:1 | AA large text | Lc 61.7 | Content text, not long reading |
| #0B91D7 text on black | 6.04:1 | AA | Lc -40.0 | 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
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DEECF7
oklch(93.6% 0.021 241.4)
-
Step 200
200
#C3DDF1
oklch(88.5% 0.039 241.1)
-
Step 300
300
#98C7EB
oklch(80.9% 0.071 241.7)
-
Step 400
400
#59A9E1
oklch(70.7% 0.114 241.4)
-
Step 500
500 (this color)
#0B91D7
oklch(62.8% 0.145 241.2)
-
Step 600
600
#007BB8
oklch(55.7% 0.13 241.1)
-
Step 700
700
#00679B
oklch(49.1% 0.115 241)
-
Step 800
800
#005480
oklch(42.6% 0.1 241.3)
-
Step 900
900
#00466C
oklch(37.7% 0.089 241.5)
-
Step 950
950
#032941
oklch(26.9% 0.061 242.1)
#0B91D7 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) | #6F93DA | 0.069 |
| Deuteranopia (no green cones) | #5582D6 | 0.053 |
| Tritanopia (no blue cones) | #00A2AA | 0.095 |
| Achromatopsia (no color) | #8A8A8A | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B91D7
#0B91D7
oklch(62.8% 0.145 241.2)
- #C57004
#C57004
oklch(62.7% 0.144 61.1)
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 #0B91D7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.030
- Dark Sky Blue #448EE4 ΔE 0.035
- Chefchaouen Blue #4895EF ΔE 0.050
- Cool Blue #4984B8 ΔE 0.055
- Blue NCS #118AB2 ΔE 0.057
- Steel Blue #4682B4 ΔE 0.061
- Dodger Blue #1E90FF ΔE 0.062
- Faded Blue #658CBB ΔE 0.066
Use #0B91D7 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.