#01555E
Closest named color: Deep Teal (#00555A). oklch(41.1% 0.07 207.2), rgb(1, 85, 94).
Aa
White text reads best on this color (8.52:1).
About this color
#01555E is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 41%, its chroma 0.070 and its hue 207°. 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 8.52:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.46:1 |
| White text | 8.52:1 |
Values
| HEX | #01555E |
| RGB | rgb(1, 85, 94) |
| HSL | hsl(186, 98%, 19%) |
| OKLCH | oklch(41.1% 0.07 207.2) |
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 #01555E | 8.52:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #01555E | 2.46:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #01555E text on white | 8.52:1 | AAA | Lc 88.9 | Fine for body text |
| #01555E 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
#C9DEE1
oklch(88.6% 0.023 207.1)
-
Step 300
300
#A3C9CE
oklch(81% 0.041 206.2)
-
Step 400
400
#6EADB5
oklch(70.8% 0.066 206)
-
Step 500
500
#4198A3
oklch(63.1% 0.084 206.6)
-
Step 600
600
#14828E
oklch(55.6% 0.091 206.7)
-
Step 700
700
#006E79
oklch(49.2% 0.084 206.9)
-
Step 800
800 (this color)
#01555E
oklch(41.1% 0.07 207.2)
-
Step 900
900
#154A50
oklch(37.8% 0.055 205.9)
-
Step 950
950
#0F2B2F
oklch(26.9% 0.034 207.9)
#01555E 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) | #4C515F | 0.068 |
| Deuteranopia (no green cones) | #41495E | 0.062 |
| Tritanopia (no blue cones) | #005958 | 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°).
- #01555E
#01555E
oklch(41.1% 0.07 207.2)
- #6C3B35
#6C3B35
oklch(41.2% 0.07 27.9)
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 #01555E, 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 Teal #014D4E ΔE 0.033
- Petrol #005F6A ΔE 0.034
- Dark Blue Green #005249 ΔE 0.035
- Dark Slate Gray #2F4F4F ΔE 0.035
- Charcoal #264653 ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.050
- Dark Green Blue #1F6357 ΔE 0.055
Use #01555E 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.