#177D75
Closest named color: Bluegreen (#017A79). oklch(53.4% 0.088 186.7), rgb(23, 125, 117).
Aa
White text reads best on this color (4.96:1).
About this color
#177D75 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 53%, its chroma 0.088 and its hue 187°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.014 away. White text reads best on it, at 4.96:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 4.22:1 |
| White text | 4.96:1 |
Values
| HEX | #177D75 |
| RGB | rgb(23, 125, 117) |
| HSL | hsl(175, 69%, 29%) |
| OKLCH | oklch(53.4% 0.088 186.7) |
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 #177D75 | 4.96:1 | AA | Lc -79.4 | Fine for body text |
| Black text on #177D75 | 4.22:1 | AA large text | Lc 30.1 | Non-text elements, placeholder text |
| #177D75 text on white | 4.96:1 | AA | Lc 74.0 | Content text, not long reading |
| #177D75 text on black | 4.22:1 | AA large text | Lc -27.7 | 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 600.
-
Step 50
50
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2ECEB
oklch(93.5% 0.011 189.8)
-
Step 200
200
#CADEDB
oklch(88.5% 0.022 186)
-
Step 300
300
#A5C9C5
oklch(80.9% 0.039 188.1)
-
Step 400
400
#72AEA7
oklch(70.8% 0.063 186.6)
-
Step 500
500
#489991
oklch(63% 0.08 186.8)
-
Step 600
600 (this color)
#177D75
oklch(53.4% 0.088 186.7)
-
Step 700
700
#116F68
oklch(49% 0.081 187)
-
Step 800
800
#145B55
oklch(42.8% 0.068 186.5)
-
Step 900
900
#1A4B46
oklch(37.8% 0.053 186)
-
Step 950
950
#112C29
oklch(27.1% 0.034 185.9)
#177D75 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) | #767675 | 0.093 |
| Deuteranopia (no green cones) | #686C76 | 0.087 |
| Tritanopia (no blue cones) | #00807A | 0.010 |
| Achromatopsia (no color) | #707070 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #177D75
#177D75
oklch(53.4% 0.088 186.7)
- #985664
#985664
oklch(53.4% 0.089 6.9)
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 #177D75, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.014
- Teal #008080 ΔE 0.017
- Deep Aqua #08787F ΔE 0.026
- Dark Aquamarine #017371 ΔE 0.033
- Deep Turquoise #017374 ΔE 0.033
- Dark Cyan #008B8B ΔE 0.046
- Ocean #017B92 ΔE 0.049
- Dark Aqua #05696B ΔE 0.063
Use #177D75 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.