#175757
Closest named color: Deep Teal (#00555A). oklch(41.8% 0.062 195), rgb(23, 87, 87).
Aa
White text reads best on this color (8.27:1).
About this color
#175757 is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.062 and its hue 195°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.014 away. White text reads best on it, at 8.27:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.53:1 |
| White text | 8.27:1 |
Values
| HEX | #175757 |
| RGB | rgb(23, 87, 87) |
| HSL | hsl(180, 58%, 22%) |
| OKLCH | oklch(41.8% 0.062 195) |
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 #175757 | 8.27:1 | AAA | Lc -92.9 | Preferred for body text |
| Black text on #175757 | 2.53:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #175757 text on white | 8.27:1 | AAA | Lc 88.3 | Fine for body text |
| #175757 text on black | 2.53:1 | Fails | Lc -13.9 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E2ECEC
oklch(93.6% 0.011 197)
-
Step 200
200
#CBDEDD
oklch(88.6% 0.02 193)
-
Step 300
300
#A6C8C8
oklch(80.8% 0.036 196.5)
-
Step 400
400
#75ACAC
oklch(70.6% 0.058 195.9)
-
Step 500
500
#4D9897
oklch(63.2% 0.075 194.3)
-
Step 600
600
#2A8282
oklch(55.6% 0.081 195.1)
-
Step 700
700
#1B6E6E
oklch(49.1% 0.076 195)
-
Step 800
800 (this color)
#175757
oklch(41.8% 0.062 195)
-
Step 900
900
#1D4A4A
oklch(37.8% 0.049 195.3)
-
Step 950
950
#122B2B
oklch(26.9% 0.031 195.5)
#175757 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) | #515257 | 0.065 |
| Deuteranopia (no green cones) | #474B57 | 0.061 |
| Tritanopia (no blue cones) | #005A57 | 0.012 |
| Achromatopsia (no color) | #4E4E4E | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175757
#175757
oklch(41.8% 0.062 195)
- #6A3E41
#6A3E41
oklch(41.8% 0.062 15.7)
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 #175757, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.014
- Dark Slate Gray #2F4F4F ΔE 0.029
- Dark Blue Green #005249 ΔE 0.029
- Petrol #005F6A ΔE 0.034
- Dark Teal #014D4E ΔE 0.037
- Dark Green Blue #1F6357 ΔE 0.041
- Charcoal #264653 ΔE 0.054
- Dark Aqua #05696B ΔE 0.058
Use #175757 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.