#10555D
Closest named color: Deep Teal (#00555A). oklch(41.3% 0.065 206.8), rgb(16, 85, 93).
Aa
White text reads best on this color (8.46:1).
About this color
#10555D is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.065 and its hue 207°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.008 away. White text reads best on it, at 8.46:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.47:1 |
| White text | 8.46:1 |
Values
| HEX | #10555D |
| RGB | rgb(16, 85, 93) |
| HSL | hsl(186, 71%, 21%) |
| OKLCH | oklch(41.3% 0.065 206.8) |
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 #10555D | 8.46:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #10555D | 2.47:1 | Fails | Lc 15.2 | Dividers and decoration only |
| #10555D text on white | 8.46:1 | AAA | Lc 88.8 | Fine for body text |
| #10555D text on black | 2.47:1 | Fails | Lc -13.4 | 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
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#CADDE0
oklch(88.4% 0.021 208.1)
-
Step 300
300
#A5C8CD
oklch(80.9% 0.038 207)
-
Step 400
400
#72ACB4
oklch(70.7% 0.061 206.8)
-
Step 500
500
#4997A1
oklch(63.1% 0.078 206.5)
-
Step 600
600
#24818C
oklch(55.6% 0.085 206.7)
-
Step 700
700
#146D77
oklch(49.1% 0.079 206.7)
-
Step 800
800 (this color)
#10555D
oklch(41.3% 0.065 206.8)
-
Step 900
900
#1B494F
oklch(37.7% 0.05 207)
-
Step 950
950
#112B2E
oklch(27% 0.032 205.4)
#10555D 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 | 0.064 |
| Deuteranopia (no green cones) | #424A5D | 0.057 |
| Tritanopia (no blue cones) | #005957 | 0.020 |
| Achromatopsia (no color) | #4D4D4D | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10555D
#10555D
oklch(41.3% 0.065 206.8)
- #6A3D38
#6A3D38
oklch(41.3% 0.064 27)
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 #10555D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.008
- Dark Slate Gray #2F4F4F ΔE 0.031
- Petrol #005F6A ΔE 0.033
- Dark Teal #014D4E ΔE 0.034
- Dark Blue Green #005249 ΔE 0.035
- Charcoal #264653 ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.049
- Dark Green Blue #1F6357 ΔE 0.052
Use #10555D 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.