#175F5A
Closest named color: Dark Green Blue (#1F6357). oklch(44.1% 0.069 188.1), rgb(23, 95, 90).
Aa
White text reads best on this color (7.44:1).
About this color
#175F5A is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.069 and its hue 188°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.017 away. White text reads best on it, at 7.44:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.82:1 |
| White text | 7.44:1 |
Values
| HEX | #175F5A |
| RGB | rgb(23, 95, 90) |
| HSL | hsl(176, 61%, 23%) |
| OKLCH | oklch(44.1% 0.069 188.1) |
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 #175F5A | 7.44:1 | AAA | Lc -90.4 | Preferred for body text |
| Black text on #175F5A | 2.82:1 | Fails | Lc 18.5 | Dividers and decoration only |
| #175F5A text on white | 7.44:1 | AAA | Lc 85.6 | Fine for body text |
| #175F5A text on black | 2.82:1 | Fails | Lc -16.5 | 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 800.
-
Step 50
50
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2ECEB
oklch(93.5% 0.011 189.8)
-
Step 200
200
#CADEDC
oklch(88.5% 0.022 189.5)
-
Step 300
300
#A4C9C5
oklch(80.8% 0.04 188.3)
-
Step 400
400
#70AEA8
oklch(70.7% 0.065 188.1)
-
Step 500
500
#469A93
oklch(63.2% 0.082 188)
-
Step 600
600
#1D847D
oklch(55.6% 0.089 188)
-
Step 700
700
#0A7069
oklch(49.2% 0.084 187.1)
-
Step 800
800 (this color)
#175F5A
oklch(44.1% 0.069 188.1)
-
Step 900
900
#184B47
oklch(37.8% 0.054 187.9)
-
Step 950
950
#102C29
oklch(27% 0.034 186.1)
#175F5A 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) | #595A5A | 0.072 |
| Deuteranopia (no green cones) | #4F525B | 0.069 |
| Tritanopia (no blue cones) | #00625D | 0.011 |
| Achromatopsia (no color) | #555555 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175F5A
#175F5A
oklch(44.1% 0.069 188.1)
- #73424B
#73424B
oklch(44% 0.069 8.4)
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 #175F5A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.017
- Petrol #005F6A ΔE 0.027
- Dark Aqua #05696B ΔE 0.035
- Deep Teal #00555A ΔE 0.036
- Dark Blue Green #005249 ΔE 0.048
- Dark Slate Gray #2F4F4F ΔE 0.050
- Spruce #0A5F38 ΔE 0.056
- Pine #2B5D34 ΔE 0.057
Use #175F5A 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.