#175F4B
Closest named color: Dark Green Blue (#1F6357). oklch(43.6% 0.077 170.1), rgb(23, 95, 75).
Aa
White text reads best on this color (7.56:1).
About this color
#175F4B is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 44%, its chroma 0.077 and its hue 170°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.022 away. White text reads best on it, at 7.56:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.77:1 |
| White text | 7.56:1 |
Values
| HEX | #175F4B |
| RGB | rgb(23, 95, 75) |
| HSL | hsl(163, 61%, 23%) |
| OKLCH | oklch(43.6% 0.077 170.1) |
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 #175F4B | 7.56:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #175F4B | 2.77:1 | Fails | Lc 18.0 | Dividers and decoration only |
| #175F4B text on white | 7.56:1 | AAA | Lc 86.0 | Fine for body text |
| #175F4B text on black | 2.77:1 | Fails | Lc -16.1 | 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 800.
-
Step 50
50
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDE8
oklch(93.6% 0.013 167.2)
-
Step 200
200
#CADFD6
oklch(88.5% 0.026 168.2)
-
Step 300
300
#A5CABC
oklch(80.8% 0.044 170.2)
-
Step 400
400
#71AF9A
oklch(70.6% 0.072 170.8)
-
Step 500
500
#479B81
oklch(63% 0.091 170.4)
-
Step 600
600
#21866A
oklch(55.6% 0.1 169.7)
-
Step 700
700
#0F7159
oklch(49% 0.092 170.6)
-
Step 800
800 (this color)
#175F4B
oklch(43.6% 0.077 170.1)
-
Step 900
900
#1A4C3D
oklch(37.8% 0.06 170.2)
-
Step 950
950
#112C24
oklch(26.9% 0.037 171.8)
#175F4B 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) | #5C584A | 0.078 |
| Deuteranopia (no green cones) | #53514C | 0.076 |
| Tritanopia (no blue cones) | #006059 | 0.022 |
| Achromatopsia (no color) | #545454 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175F4B
#175F4B
oklch(43.6% 0.077 170.1)
- #713F57
#713F57
oklch(43.6% 0.077 350.5)
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 #175F4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.022
- Spruce #0A5F38 ΔE 0.031
- Pine #2B5D34 ΔE 0.033
- Dark Blue Green #005249 ΔE 0.046
- Deep Teal #00555A ΔE 0.049
- Petrol #005F6A ΔE 0.051
- Dark Aqua #05696B ΔE 0.052
- Dark Slate Gray #2F4F4F ΔE 0.057
Use #175F4B 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.