#175257
Closest named color: Deep Teal (#00555A). oklch(40.4% 0.059 203.2), rgb(23, 82, 87).
Aa
White text reads best on this color (8.81:1).
About this color
#175257 is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.059 and its hue 203°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.012 away. White text reads best on it, at 8.81:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.38:1 |
| White text | 8.81:1 |
Values
| HEX | #175257 |
| RGB | rgb(23, 82, 87) |
| HSL | hsl(185, 58%, 22%) |
| OKLCH | oklch(40.4% 0.059 203.2) |
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 #175257 | 8.81:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #175257 | 2.38:1 | Fails | Lc 14.1 | Not readable |
| #175257 text on white | 8.81:1 | AAA | Lc 89.9 | Fine for body text |
| #175257 text on black | 2.38:1 | Fails | Lc -12.4 | 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
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CBDDDF
oklch(88.5% 0.019 204.8)
-
Step 300
300
#A8C8CB
oklch(81% 0.035 203.5)
-
Step 400
400
#77ABB0
oklch(70.7% 0.055 203.5)
-
Step 500
500
#51969D
oklch(63.1% 0.07 204.1)
-
Step 600
600
#318087
oklch(55.5% 0.076 203.4)
-
Step 700
700
#226C73
oklch(49% 0.071 204.1)
-
Step 800
800 (this color)
#175257
oklch(40.4% 0.059 203.2)
-
Step 900
900
#20494D
oklch(37.8% 0.046 203.9)
-
Step 950
950
#142B2D
oklch(27.1% 0.029 202.9)
#175257 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) | #4B4E57 | 0.059 |
| Deuteranopia (no green cones) | #424757 | 0.056 |
| Tritanopia (no blue cones) | #005553 | 0.017 |
| Achromatopsia (no color) | #4A4A4A | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175257
#175257
oklch(40.4% 0.059 203.2)
- #653C39
#653C39
oklch(40.5% 0.059 24.5)
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 #175257, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.012
- Dark Slate Gray #2F4F4F ΔE 0.022
- Dark Teal #014D4E ΔE 0.025
- Dark Blue Green #005249 ΔE 0.028
- Charcoal #264653 ΔE 0.038
- Dark Grey Blue #29465B ΔE 0.043
- Petrol #005F6A ΔE 0.044
- Dark Green Blue #1F6357 ΔE 0.058
Use #175257 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.