#01817E
Closest named color: Teal (#008080). oklch(54.5% 0.093 191.9), rgb(1, 129, 126).
Aa
White text reads best on this color (4.72:1).
About this color
#01817E is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 55%, its chroma 0.093 and its hue 192°. Its hue sits on the cool side of the wheel. The nearest named color is Teal (#008080), ΔE 0.005 away. White text reads best on it, at 4.72:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Teal (#008080) |
| Black text | 4.44:1 |
| White text | 4.72:1 |
Values
| HEX | #01817E |
| RGB | rgb(1, 129, 126) |
| HSL | hsl(179, 98%, 25%) |
| OKLCH | oklch(54.5% 0.093 191.9) |
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 #01817E | 4.72:1 | AA | Lc -77.7 | Fine for body text |
| Black text on #01817E | 4.44:1 | AA large text | Lc 31.8 | Non-text elements, placeholder text |
| #01817E text on white | 4.72:1 | AA | Lc 72.3 | Content text, not long reading |
| #01817E text on black | 4.44:1 | AA large text | Lc -29.4 | Dividers and decoration only |
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 600.
-
Step 50
50
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E1EDEC
oklch(93.7% 0.013 190.9)
-
Step 200
200
#C9DEDD
oklch(88.5% 0.022 193.3)
-
Step 300
300
#A2CAC7
oklch(80.9% 0.043 190.7)
-
Step 400
400
#6DAEAB
oklch(70.6% 0.067 192)
-
Step 500
500
#3F9A97
oklch(63.1% 0.086 192.2)
-
Step 600
600 (this color)
#01817E
oklch(54.5% 0.093 191.9)
-
Step 700
700
#006F6D
oklch(49% 0.084 192.6)
-
Step 800
800
#055B59
oklch(42.7% 0.072 192.2)
-
Step 900
900
#144B49
oklch(37.7% 0.056 191.6)
-
Step 950
950
#0E2C2B
oklch(27% 0.036 192.3)
#01817E 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) | #787A7E | 0.098 |
| Deuteranopia (no green cones) | #696F7F | 0.091 |
| Tritanopia (no blue cones) | #008580 | 0.012 |
| Achromatopsia (no color) | #737373 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #01817E
#01817E
oklch(54.5% 0.093 191.9)
- #9F5862
#9F5862
oklch(54.6% 0.094 11.7)
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 #01817E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal #008080 ΔE 0.005
- Bluegreen #017A79 ΔE 0.021
- Deep Aqua #08787F ΔE 0.029
- Dark Cyan #008B8B ΔE 0.032
- Ocean #017B92 ΔE 0.042
- Deep Turquoise #017374 ΔE 0.043
- Dark Aquamarine #017371 ΔE 0.044
- Teal Blue #01889F ΔE 0.051
Use #01817E 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.