#10757E
Closest named color: Deep Aqua (#08787F). oklch(51.5% 0.084 204.6), rgb(16, 117, 126).
Aa
White text reads best on this color (5.42:1).
About this color
#10757E is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 51%, its chroma 0.084 and its hue 205°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.009 away. White text reads best on it, at 5.42:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 3.86:1 |
| White text | 5.42:1 |
Values
| HEX | #10757E |
| RGB | rgb(16, 117, 126) |
| HSL | hsl(185, 77%, 28%) |
| OKLCH | oklch(51.5% 0.084 204.6) |
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 #10757E | 5.42:1 | AA | Lc -82.0 | Fine for body text |
| Black text on #10757E | 3.86:1 | AA large text | Lc 27.4 | Dividers and decoration only |
| #10757E text on white | 5.42:1 | AA | Lc 76.6 | Fine for body text |
| #10757E text on black | 3.86:1 | AA large text | Lc -25.1 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
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
#6EADB4
oklch(70.8% 0.065 204.7)
-
Step 500
500
#4198A1
oklch(63.1% 0.084 204.6)
-
Step 600
600
#15828C
oklch(55.5% 0.09 204.8)
-
Step 700
700 (this color)
#10757E
oklch(51.5% 0.084 204.6)
-
Step 800
800
#0A5A61
oklch(42.8% 0.07 204.4)
-
Step 900
900
#164A4F
oklch(37.8% 0.054 204.2)
-
Step 950
950
#0F2B2E
oklch(26.9% 0.034 204.8)
#10757E 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) | #6A707F | 0.083 |
| Deuteranopia (no green cones) | #5C657E | 0.077 |
| Tritanopia (no blue cones) | #007A78 | 0.021 |
| Achromatopsia (no color) | #6A6A6A | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10757E
#10757E
oklch(51.5% 0.084 204.6)
- #92534F
#92534F
oklch(51.5% 0.085 24.3)
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 #10757E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.009
- Deep Turquoise #017374 ΔE 0.017
- Bluegreen #017A79 ΔE 0.020
- Dark Aquamarine #017371 ΔE 0.022
- Ocean #017B92 ΔE 0.032
- Teal #008080 ΔE 0.033
- Sea Blue #047495 ΔE 0.038
- Dark Aqua #05696B ΔE 0.043
Use #10757E 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.