#177380
Closest named color: Deep Aqua (#08787F). oklch(51.1% 0.082 209.5), rgb(23, 115, 128).
Aa
White text reads best on this color (5.52:1).
About this color
#177380 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 51%, its chroma 0.082 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.016 away. White text reads best on it, at 5.52:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 3.80:1 |
| White text | 5.52:1 |
Values
| HEX | #177380 |
| RGB | rgb(23, 115, 128) |
| HSL | hsl(187, 70%, 30%) |
| OKLCH | oklch(51.1% 0.082 209.5) |
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 #177380 | 5.52:1 | AA | Lc -82.5 | Fine for body text |
| Black text on #177380 | 3.80:1 | AA large text | Lc 26.9 | Dividers and decoration only |
| #177380 text on white | 5.52:1 | AA | Lc 77.2 | Fine for body text |
| #177380 text on black | 3.80:1 | AA large text | Lc -24.5 | 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 700.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#C9DDE1
oklch(88.4% 0.022 211)
-
Step 300
300
#A4C8CF
oklch(80.9% 0.04 210.7)
-
Step 400
400
#70ACB6
oklch(70.7% 0.064 209.1)
-
Step 500
500
#4597A4
oklch(63.1% 0.081 209.2)
-
Step 600
600
#1E818F
oklch(55.6% 0.088 209.3)
-
Step 700
700 (this color)
#177380
oklch(51.1% 0.082 209.5)
-
Step 800
800
#115963
oklch(42.7% 0.068 209.1)
-
Step 900
900
#184951
oklch(37.6% 0.053 210.1)
-
Step 950
950
#102B2F
oklch(27% 0.033 208.2)
#177380 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) | #686E81 | 0.078 |
| Deuteranopia (no green cones) | #5A6480 | 0.071 |
| Tritanopia (no blue cones) | #007977 | 0.028 |
| Achromatopsia (no color) | #696969 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #177380
#177380
oklch(51.1% 0.082 209.5)
- #90544A
#90544A
oklch(51.3% 0.082 30.3)
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 #177380, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.016
- Deep Turquoise #017374 ΔE 0.022
- Dark Aquamarine #017371 ΔE 0.026
- Bluegreen #017A79 ΔE 0.028
- Ocean #017B92 ΔE 0.032
- Sea Blue #047495 ΔE 0.033
- Teal #008080 ΔE 0.040
- Dark Aqua #05696B ΔE 0.042
Use #177380 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.