#10576B
Closest named color: Petrol (#005F6A). oklch(42.5% 0.073 222.1), rgb(16, 87, 107).
Aa
White text reads best on this color (8.08:1).
About this color
#10576B is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 43%, its chroma 0.073 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.026 away. White text reads best on it, at 8.08:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.59:1 |
| White text | 8.08:1 |
Values
| HEX | #10576B |
| RGB | rgb(16, 87, 107) |
| HSL | hsl(193, 74%, 24%) |
| OKLCH | oklch(42.5% 0.073 222.1) |
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 #10576B | 8.08:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #10576B | 2.59:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #10576B text on white | 8.08:1 | AAA | Lc 87.6 | Fine for body text |
| #10576B text on black | 2.59:1 | Fails | Lc -14.5 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C9DDE4
oklch(88.5% 0.023 220.8)
-
Step 300
300
#A3C7D5
oklch(80.8% 0.043 223.5)
-
Step 400
400
#70ABBF
oklch(70.8% 0.068 221.4)
-
Step 500
500
#4595AF
oklch(63% 0.087 222.2)
-
Step 600
600
#1D7F9B
oklch(55.6% 0.095 222.3)
-
Step 700
700
#0B6B84
oklch(49% 0.088 222.1)
-
Step 800
800 (this color)
#10576B
oklch(42.5% 0.073 222.1)
-
Step 900
900
#184857
oklch(37.6% 0.057 222.2)
-
Step 950
950
#102A33
oklch(26.9% 0.036 223.3)
#10576B 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) | #4B556C | 0.058 |
| Deuteranopia (no green cones) | #3F4C6B | 0.051 |
| Tritanopia (no blue cones) | #005D5D | 0.036 |
| Achromatopsia (no color) | #505050 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10576B
#10576B
oklch(42.5% 0.073 222.1)
- #70402D
#70402D
oklch(42.5% 0.074 42.1)
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 #10576B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.026
- Deep Teal #00555A ΔE 0.030
- Deep Sea Blue #015482 ΔE 0.042
- Dark Slate Gray #2F4F4F ΔE 0.048
- YInMn Blue #415A77 ΔE 0.051
- Light Navy #155084 ΔE 0.052
- Dark Grey Blue #29465B ΔE 0.054
- Dark Teal #014D4E ΔE 0.054
Use #10576B 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.