#03555D
Closest named color: Deep Teal (#00555A). oklch(41.1% 0.069 206), rgb(3, 85, 93).
Aa
White text reads best on this color (8.53:1).
About this color
#03555D is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.069 and its hue 206°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.005 away. White text reads best on it, at 8.53:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.46:1 |
| White text | 8.53:1 |
Values
| HEX | #03555D |
| RGB | rgb(3, 85, 93) |
| HSL | hsl(185, 94%, 19%) |
| OKLCH | oklch(41.1% 0.069 206) |
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 #03555D | 8.53:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #03555D | 2.46:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #03555D text on white | 8.53:1 | AAA | Lc 88.9 | Fine for body text |
| #03555D text on black | 2.46:1 | 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
#F1F6F7
oklch(97% 0.005 211)
-
Step 100
100
#E1ECEE
oklch(93.5% 0.012 209.8)
-
Step 200
200
#C9DEE0
oklch(88.6% 0.023 203.7)
-
Step 300
300
#A3C9CD
oklch(81% 0.041 204.3)
-
Step 400
400
#6FADB4
oklch(70.8% 0.065 204.9)
-
Step 500
500
#4298A2
oklch(63.1% 0.083 205.7)
-
Step 600
600
#17828D
oklch(55.6% 0.09 205.9)
-
Step 700
700
#016E78
oklch(49.2% 0.084 205.8)
-
Step 800
800 (this color)
#03555D
oklch(41.1% 0.069 206)
-
Step 900
900
#164A50
oklch(37.8% 0.054 206)
-
Step 950
950
#0F2B2F
oklch(26.9% 0.034 207.9)
#03555D 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 | 0.068 |
| Deuteranopia (no green cones) | #41495D | 0.061 |
| Tritanopia (no blue cones) | #005957 | 0.019 |
| Achromatopsia (no color) | #4C4C4C | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03555D
#03555D
oklch(41.1% 0.069 206)
- #6B3B37
#6B3B37
oklch(41.1% 0.069 25.5)
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 #03555D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.005
- Dark Teal #014D4E ΔE 0.032
- Dark Blue Green #005249 ΔE 0.033
- Dark Slate Gray #2F4F4F ΔE 0.034
- Petrol #005F6A ΔE 0.034
- Charcoal #264653 ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.050
- Dark Green Blue #1F6357 ΔE 0.054
Use #03555D 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.