#177A83
Closest named color: Deep Aqua (#08787F). oklch(53.1% 0.085 204.5), rgb(23, 122, 131).
Aa
White text reads best on this color (5.06:1).
About this color
#177A83 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 53%, its chroma 0.085 and its hue 204°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.010 away. White text reads best on it, at 5.06:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 4.14:1 |
| White text | 5.06:1 |
Values
| HEX | #177A83 |
| RGB | rgb(23, 122, 131) |
| HSL | hsl(185, 70%, 30%) |
| OKLCH | oklch(53.1% 0.085 204.5) |
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 #177A83 | 5.06:1 | AA | Lc -80.0 | Fine for body text |
| Black text on #177A83 | 4.14:1 | AA large text | Lc 29.5 | Dividers and decoration only |
| #177A83 text on white | 5.06:1 | AA | Lc 74.6 | Content text, not long reading |
| #177A83 text on black | 4.14:1 | AA large text | Lc -27.1 | 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 600.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#CADDE0
oklch(88.4% 0.021 208.1)
-
Step 300
300
#A5C8CC
oklch(80.9% 0.038 205)
-
Step 400
400
#72ACB2
oklch(70.7% 0.061 204.1)
-
Step 500
500
#4897A0
oklch(63% 0.078 205.3)
-
Step 600
600 (this color)
#177A83
oklch(53.1% 0.085 204.5)
-
Step 700
700
#126D76
oklch(49% 0.079 205.4)
-
Step 800
800
#155960
oklch(42.7% 0.065 205.2)
-
Step 900
900
#1A494E
oklch(37.6% 0.051 204.9)
-
Step 950
950
#112B2E
oklch(27% 0.032 205.4)
#177A83 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) | #6F7584 | 0.084 |
| Deuteranopia (no green cones) | #616A83 | 0.077 |
| Tritanopia (no blue cones) | #007F7D | 0.021 |
| Achromatopsia (no color) | #6E6E6E | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #177A83
#177A83
oklch(53.1% 0.085 204.5)
- #975853
#975853
oklch(53.1% 0.084 25.1)
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 #177A83, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.010
- Bluegreen #017A79 ΔE 0.018
- Teal #008080 ΔE 0.021
- Ocean #017B92 ΔE 0.023
- Deep Turquoise #017374 ΔE 0.030
- Dark Aquamarine #017371 ΔE 0.034
- Sea Blue #047495 ΔE 0.039
- Dark Cyan #008B8B ΔE 0.050
Use #177A83 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.