#177A89
Closest named color: Ocean (#017B92). oklch(53.3% 0.087 210.7), rgb(23, 122, 137).
Aa
White text reads best on this color (5.02:1).
About this color
#177A89 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 53%, its chroma 0.087 and its hue 211°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.014 away. White text reads best on it, at 5.02:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.18:1 |
| White text | 5.02:1 |
Values
| HEX | #177A89 |
| RGB | rgb(23, 122, 137) |
| HSL | hsl(188, 71%, 31%) |
| OKLCH | oklch(53.3% 0.087 210.7) |
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 #177A89 | 5.02:1 | AA | Lc -79.7 | Fine for body text |
| Black text on #177A89 | 4.18:1 | AA large text | Lc 29.8 | Dividers and decoration only |
| #177A89 text on white | 5.02:1 | AA | Lc 74.3 | Content text, not long reading |
| #177A89 text on black | 4.18:1 | AA large text | Lc -27.4 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CADDE1
oklch(88.5% 0.021 211.8)
-
Step 300
300
#A4C8CF
oklch(80.9% 0.04 210.7)
-
Step 400
400
#71ACB7
oklch(70.8% 0.063 210.5)
-
Step 500
500
#4797A5
oklch(63.2% 0.08 210.5)
-
Step 600
600 (this color)
#177A89
oklch(53.3% 0.087 210.7)
-
Step 700
700
#116D7A
oklch(49.2% 0.081 209.9)
-
Step 800
800
#145964
oklch(42.8% 0.067 210.8)
-
Step 900
900
#1A4951
oklch(37.7% 0.052 210.5)
-
Step 950
950
#112B2F
oklch(27% 0.033 208.6)
#177A89 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) | #6E758A | 0.082 |
| Deuteranopia (no green cones) | #5F6A89 | 0.075 |
| Tritanopia (no blue cones) | #00807F | 0.029 |
| Achromatopsia (no color) | #6F6F6F | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #177A89
#177A89
oklch(53.3% 0.087 210.7)
- #99594E
#99594E
oklch(53.4% 0.087 30.6)
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 #177A89, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.014
- Deep Aqua #08787F ΔE 0.017
- Teal #008080 ΔE 0.027
- Bluegreen #017A79 ΔE 0.028
- Sea Blue #047495 ΔE 0.031
- Deep Turquoise #017374 ΔE 0.037
- Dark Aquamarine #017371 ΔE 0.041
- Teal Blue #01889F ΔE 0.047
Use #177A89 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.