#15636D
Closest named color: Petrol (#005F6A). oklch(46% 0.072 208), rgb(21, 99, 109).
Aa
White text reads best on this color (6.91:1).
About this color
#15636D is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 46%, its chroma 0.072 and its hue 208°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.016 away. White text reads best on it, at 6.91:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 3.03:1 |
| White text | 6.91:1 |
Values
| HEX | #15636D |
| RGB | rgb(21, 99, 109) |
| HSL | hsl(187, 68%, 25%) |
| OKLCH | oklch(46% 0.072 208) |
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 #15636D | 6.91:1 | AA | Lc -88.6 | Fine for body text |
| Black text on #15636D | 3.03:1 | AA large text | Lc 20.5 | Dividers and decoration only |
| #15636D text on white | 6.91:1 | AA | Lc 83.6 | Fine for body text |
| #15636D text on black | 3.03:1 | AA large text | Lc -18.4 | 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 700.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CBDDE0
oklch(88.5% 0.02 208.8)
-
Step 300
300
#A7C7CC
oklch(80.8% 0.035 208)
-
Step 400
400
#77ABB3
oklch(70.8% 0.056 208)
-
Step 500
500
#5096A0
oklch(63.1% 0.072 207.5)
-
Step 600
600
#30808B
oklch(55.6% 0.078 207.8)
-
Step 700
700 (this color)
#15636D
oklch(46% 0.072 208)
-
Step 800
800
#1E5860
oklch(42.7% 0.06 207.9)
-
Step 900
900
#20494F
oklch(37.9% 0.047 208)
-
Step 950
950
#142B2E
oklch(27.2% 0.029 206.4)
#15636D 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) | #5A5F6E | 0.070 |
| Deuteranopia (no green cones) | #4E566D | 0.064 |
| Tritanopia (no blue cones) | #006866 | 0.023 |
| Achromatopsia (no color) | #5A5A5A | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15636D
#15636D
oklch(46% 0.072 208)
- #7B4841
#7B4841
oklch(46% 0.071 28.5)
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 #15636D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.016
- Dark Aqua #05696B ΔE 0.021
- Dark Green Blue #1F6357 ΔE 0.036
- Deep Turquoise #017374 ΔE 0.049
- Dark Aquamarine #017371 ΔE 0.049
- YInMn Blue #415A77 ΔE 0.051
- Deep Teal #00555A ΔE 0.051
- Slate #516572 ΔE 0.059
Use #15636D 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.