#01555C
Closest named color: Deep Teal (#00555A). oklch(41% 0.07 204.5), rgb(1, 85, 92).
Aa
White text reads best on this color (8.55:1).
About this color
#01555C is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.070 and its hue 205°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.004 away. White text reads best on it, at 8.55:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.45:1 |
| White text | 8.55:1 |
Values
| HEX | #01555C |
| RGB | rgb(1, 85, 92) |
| HSL | hsl(185, 98%, 18%) |
| OKLCH | oklch(41% 0.07 204.5) |
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 #01555C | 8.55:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #01555C | 2.45:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #01555C text on white | 8.55:1 | AAA | Lc 88.9 | Fine for body text |
| #01555C text on black | 2.45:1 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1ECED
oklch(93.5% 0.012 203.5)
-
Step 200
200
#C9DEE0
oklch(88.6% 0.023 203.7)
-
Step 300
300
#A3C9CD
oklch(81% 0.041 204.3)
-
Step 400
400
#6EADB4
oklch(70.8% 0.065 204.7)
-
Step 500
500
#4298A1
oklch(63.1% 0.083 204.7)
-
Step 600
600
#15828C
oklch(55.5% 0.09 204.8)
-
Step 700
700
#006E77
oklch(49.1% 0.084 204.7)
-
Step 800
800 (this color)
#01555C
oklch(41% 0.07 204.5)
-
Step 900
900
#164A4F
oklch(37.8% 0.054 204.2)
-
Step 950
950
#0F2B2E
oklch(26.9% 0.034 204.8)
#01555C 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) | #4D515C | 0.069 |
| Deuteranopia (no green cones) | #42495C | 0.063 |
| Tritanopia (no blue cones) | #005957 | 0.018 |
| Achromatopsia (no color) | #4C4C4C | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #01555C
#01555C
oklch(41% 0.07 204.5)
- #6B3A37
#6B3A37
oklch(40.9% 0.07 24.3)
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 #01555C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.004
- Dark Teal #014D4E ΔE 0.031
- Dark Blue Green #005249 ΔE 0.032
- Dark Slate Gray #2F4F4F ΔE 0.034
- Petrol #005F6A ΔE 0.035
- Charcoal #264653 ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.051
- Dark Green Blue #1F6357 ΔE 0.053
Use #01555C 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.