#15818B
Closest named color: Teal (#008080). oklch(55.2% 0.09 204.9), rgb(21, 129, 139).
Aa
White text reads best on this color (4.62:1).
About this color
#15818B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 55%, its chroma 0.090 and its hue 205°. Its hue sits on the cool side of the wheel. The nearest named color is Teal (#008080), ΔE 0.019 away. White text reads best on it, at 4.62:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Teal (#008080) |
| Black text | 4.54:1 |
| White text | 4.62:1 |
Values
| HEX | #15818B |
| RGB | rgb(21, 129, 139) |
| HSL | hsl(185, 74%, 31%) |
| OKLCH | oklch(55.2% 0.09 204.9) |
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 #15818B | 4.62:1 | AA | Lc -77.1 | Fine for body text |
| Black text on #15818B | 4.54:1 | AA | Lc 32.4 | Non-text elements, placeholder text |
| #15818B text on white | 4.62:1 | AA | Lc 71.7 | Content text, not long reading |
| #15818B text on black | 4.54:1 | AA | Lc -30.0 | Non-text elements, placeholder text |
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
#F1F6F7
oklch(97% 0.005 211)
-
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
#6FADB4
oklch(70.8% 0.065 204.9)
-
Step 500
500
#4398A1
oklch(63.1% 0.082 204.7)
-
Step 600
600 (this color)
#15818B
oklch(55.2% 0.09 204.9)
-
Step 700
700
#016E77
oklch(49.1% 0.084 204.7)
-
Step 800
800
#0C5A61
oklch(42.8% 0.069 204.5)
-
Step 900
900
#164A4F
oklch(37.8% 0.054 204.2)
-
Step 950
950
#0F2B2E
oklch(26.9% 0.034 204.8)
#15818B 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) | #757B8C | 0.088 |
| Deuteranopia (no green cones) | #66708B | 0.081 |
| Tritanopia (no blue cones) | #008784 | 0.025 |
| Achromatopsia (no color) | #757575 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15818B
#15818B
oklch(55.2% 0.09 204.9)
- #A05C57
#A05C57
oklch(55.1% 0.09 24.9)
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 #15818B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal #008080 ΔE 0.019
- Ocean #017B92 ΔE 0.025
- Dark Cyan #008B8B ΔE 0.031
- Deep Aqua #08787F ΔE 0.031
- Teal Blue #01889F ΔE 0.032
- Bluegreen #017A79 ΔE 0.033
- Sea Blue #047495 ΔE 0.048
- Cerulean #457B9D ΔE 0.050
Use #15818B 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.