#0B555D
Closest named color: Deep Teal (#00555A). oklch(41.2% 0.067 206.4), rgb(11, 85, 93).
Aa
White text reads best on this color (8.49:1).
About this color
#0B555D is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.067 and its hue 206°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.007 away. White text reads best on it, at 8.49:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.47:1 |
| White text | 8.49:1 |
Values
| HEX | #0B555D |
| RGB | rgb(11, 85, 93) |
| HSL | hsl(186, 79%, 20%) |
| OKLCH | oklch(41.2% 0.067 206.4) |
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 #0B555D | 8.49:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #0B555D | 2.47:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #0B555D text on white | 8.49:1 | AAA | Lc 88.9 | Fine for body text |
| #0B555D text on black | 2.47:1 | Fails | Lc -13.3 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#C9DEE0
oklch(88.6% 0.023 203.7)
-
Step 300
300
#A4C8CD
oklch(80.8% 0.039 206.8)
-
Step 400
400
#71ACB4
oklch(70.7% 0.062 206.6)
-
Step 500
500
#4697A2
oklch(63% 0.08 207.2)
-
Step 600
600
#1F818D
oklch(55.5% 0.087 207.4)
-
Step 700
700
#0D6D77
oklch(49% 0.081 206.3)
-
Step 800
800 (this color)
#0B555D
oklch(41.2% 0.067 206.4)
-
Step 900
900
#19494F
oklch(37.6% 0.052 206.6)
-
Step 950
950
#102B2E
oklch(27% 0.033 205.1)
#0B555D 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) | #4D515E | 0.066 |
| Deuteranopia (no green cones) | #42495D | 0.060 |
| Tritanopia (no blue cones) | #005957 | 0.019 |
| Achromatopsia (no color) | #4D4D4D | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B555D
#0B555D
oklch(41.2% 0.067 206.4)
- #6B3C37
#6B3C37
oklch(41.2% 0.067 26.8)
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 #0B555D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.007
- Dark Slate Gray #2F4F4F ΔE 0.032
- Dark Teal #014D4E ΔE 0.033
- Petrol #005F6A ΔE 0.034
- Dark Blue Green #005249 ΔE 0.034
- Charcoal #264653 ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.050
- Dark Green Blue #1F6357 ΔE 0.053
Use #0B555D 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.