#0B91BB
Closest named color: Blue NCS (#118AB2). oklch(61.3% 0.117 227.7), rgb(11, 145, 187).
Aa
Black text reads best on this color (5.78:1).
About this color
#0B91BB is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 61%, its chroma 0.117 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.022 away. Black text reads best on it, at 5.78:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.78:1 |
| White text | 3.63:1 |
Values
| HEX | #0B91BB |
| RGB | rgb(11, 145, 187) |
| HSL | hsl(194, 89%, 39%) |
| OKLCH | oklch(61.3% 0.117 227.7) |
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 #0B91BB | 3.63:1 | AA large text | Lc -68.8 | Content text, not long reading |
| Black text on #0B91BB | 5.78:1 | AA | Lc 40.7 | Non-text elements, placeholder text |
| #0B91BB text on white | 3.63:1 | AA large text | Lc 63.3 | Content text, not long reading |
| #0B91BB text on black | 5.78:1 | AA | Lc -38.3 | 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
#F0F7F9
oklch(97.1% 0.008 216.6)
-
Step 100
100
#DFECF3
oklch(93.5% 0.017 230.9)
-
Step 200
200
#C4DEEA
oklch(88.5% 0.032 227.3)
-
Step 300
300
#9AC9DE
oklch(81% 0.057 227.1)
-
Step 400
400
#5DACCD
oklch(70.7% 0.091 227.4)
-
Step 500
500 (this color)
#0B91BB
oklch(61.3% 0.117 227.7)
-
Step 600
600
#007FA5
oklch(55.7% 0.108 227.8)
-
Step 700
700
#006A8B
oklch(49% 0.096 228.3)
-
Step 800
800
#005772
oklch(42.6% 0.083 227.6)
-
Step 900
900
#004960
oklch(37.8% 0.073 227.3)
-
Step 950
950
#042B39
oklch(27.1% 0.049 227.2)
#0B91BB 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) | #7B8EBD | 0.085 |
| Deuteranopia (no green cones) | #6680BA | 0.072 |
| Tritanopia (no blue cones) | #009D9F | 0.064 |
| Achromatopsia (no color) | #868686 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B91BB
#0B91BB
oklch(61.3% 0.117 227.7)
- #BC6C41
#BC6C41
oklch(61.2% 0.117 47.8)
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 #0B91BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.022
- Water Blue #0E87CC ΔE 0.044
- Cool Blue #4984B8 ΔE 0.044
- Steel Blue #4682B4 ΔE 0.046
- Teal Blue #01889F ΔE 0.046
- Off Blue #5684AE ΔE 0.051
- Dusty Blue #5A86AD ΔE 0.052
- Faded Blue #658CBB ΔE 0.058
Use #0B91BB 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.