#15515E
Closest named color: Deep Teal (#00555A). oklch(40.4% 0.063 215.5), rgb(21, 81, 94).
Aa
White text reads best on this color (8.85:1).
About this color
#15515E is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.063 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.018 away. White text reads best on it, at 8.85:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.37:1 |
| White text | 8.85:1 |
Values
| HEX | #15515E |
| RGB | rgb(21, 81, 94) |
| HSL | hsl(191, 63%, 23%) |
| OKLCH | oklch(40.4% 0.063 215.5) |
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 #15515E | 8.85:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #15515E | 2.37:1 | Fails | Lc 14.0 | Not readable |
| #15515E text on white | 8.85:1 | AAA | Lc 90.0 | Fine for body text |
| #15515E text on black | 2.37:1 | Fails | Lc -12.3 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CBDDE2
oklch(88.6% 0.021 216.2)
-
Step 300
300
#A7C7D0
oklch(80.9% 0.037 216.6)
-
Step 400
400
#76AAB8
oklch(70.6% 0.058 216.4)
-
Step 500
500
#4F95A6
oklch(63.1% 0.075 215.5)
-
Step 600
600
#2E7F91
oklch(55.5% 0.081 215.3)
-
Step 700
700
#206B7C
oklch(49% 0.076 216.2)
-
Step 800
800 (this color)
#15515E
oklch(40.4% 0.063 215.5)
-
Step 900
900
#1F4852
oklch(37.7% 0.049 216)
-
Step 950
950
#132A30
oklch(26.9% 0.031 216.7)
#15515E 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) | #484E5F | 0.056 |
| Deuteranopia (no green cones) | #3E475E | 0.050 |
| Tritanopia (no blue cones) | #005655 | 0.027 |
| Achromatopsia (no color) | #4A4A4A | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15515E
#15515E
oklch(40.4% 0.063 215.5)
- #663C31
#663C31
oklch(40.4% 0.063 35.5)
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 #15515E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.018
- Dark Slate Gray #2F4F4F ΔE 0.030
- Dark Teal #014D4E ΔE 0.031
- Charcoal #264653 ΔE 0.035
- Dark Grey Blue #29465B ΔE 0.036
- Dark Blue Green #005249 ΔE 0.040
- Petrol #005F6A ΔE 0.044
- Deep Sea Blue #015482 ΔE 0.060
Use #15515E 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.