#0B5166
Closest named color: Deep Teal (#00555A). oklch(40.5% 0.072 224.3), rgb(11, 81, 102).
Aa
White text reads best on this color (8.81:1).
About this color
#0B5166 is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 41%, its chroma 0.072 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.028 away. White text reads best on it, at 8.81:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.38:1 |
| White text | 8.81:1 |
Values
| HEX | #0B5166 |
| RGB | rgb(11, 81, 102) |
| HSL | hsl(194, 81%, 22%) |
| OKLCH | oklch(40.5% 0.072 224.3) |
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 #0B5166 | 8.81:1 | AAA | Lc -94.3 | Preferred for body text |
| Black text on #0B5166 | 2.38:1 | Fails | Lc 14.2 | Not readable |
| #0B5166 text on white | 8.81:1 | AAA | Lc 89.8 | Fine for body text |
| #0B5166 text on black | 2.38:1 | Fails | Lc -12.5 | Not readable |
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 800.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECF0
oklch(93.7% 0.012 223.5)
-
Step 200
200
#CADDE5
oklch(88.6% 0.023 224.9)
-
Step 300
300
#A4C7D5
oklch(80.9% 0.042 224.1)
-
Step 400
400
#71AAC0
oklch(70.7% 0.068 224.3)
-
Step 500
500
#4895B0
oklch(63.2% 0.086 223.7)
-
Step 600
600
#237F9C
oklch(55.7% 0.093 223.9)
-
Step 700
700
#126B85
oklch(49.2% 0.087 223.6)
-
Step 800
800 (this color)
#0B5166
oklch(40.5% 0.072 224.3)
-
Step 900
900
#1A4858
oklch(37.8% 0.056 224.3)
-
Step 950
950
#112A33
oklch(26.9% 0.035 224)
#0B5166 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) | #454F67 | 0.055 |
| Deuteranopia (no green cones) | #3A4766 | 0.049 |
| Tritanopia (no blue cones) | #005758 | 0.036 |
| Achromatopsia (no color) | #4A4A4A | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B5166
#0B5166
oklch(40.5% 0.072 224.3)
- #693B27
#693B27
oklch(40.4% 0.072 43.8)
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 #0B5166, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.028
- Dark Grey Blue #29465B ΔE 0.037
- Charcoal #264653 ΔE 0.041
- Dark Teal #014D4E ΔE 0.042
- Dark Slate Gray #2F4F4F ΔE 0.043
- Petrol #005F6A ΔE 0.044
- Deep Sea Blue #015482 ΔE 0.046
- Dark Blue Green #005249 ΔE 0.052
Use #0B5166 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.