#177488
Closest named color: Sea Blue (#047495). oklch(51.7% 0.086 216.6), rgb(23, 116, 136).
Aa
White text reads best on this color (5.39:1).
About this color
#177488 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 52%, its chroma 0.086 and its hue 217°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.021 away. White text reads best on it, at 5.39:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.89:1 |
| White text | 5.39:1 |
Values
| HEX | #177488 |
| RGB | rgb(23, 116, 136) |
| HSL | hsl(191, 71%, 31%) |
| OKLCH | oklch(51.7% 0.086 216.6) |
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 #177488 | 5.39:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #177488 | 3.89:1 | AA large text | Lc 27.6 | Dividers and decoration only |
| #177488 text on white | 5.39:1 | AA | Lc 76.5 | Fine for body text |
| #177488 text on black | 3.89:1 | AA large text | Lc -25.2 | 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECEF
oklch(93.6% 0.012 215.8)
-
Step 200
200
#C9DDE3
oklch(88.4% 0.023 217.7)
-
Step 300
300
#A3C8D2
oklch(80.9% 0.042 216)
-
Step 400
400
#6FABBB
oklch(70.6% 0.066 216.5)
-
Step 500
500
#4496AB
oklch(63.1% 0.085 217.2)
-
Step 600
600
#1A8096
oklch(55.5% 0.092 216.7)
-
Step 700
700 (this color)
#177488
oklch(51.7% 0.086 216.6)
-
Step 800
800
#0F5868
oklch(42.6% 0.071 216.9)
-
Step 900
900
#174955
oklch(37.8% 0.056 216.7)
-
Step 950
950
#0F2B32
oklch(27.1% 0.036 216.6)
#177488 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) | #677089 | 0.076 |
| Deuteranopia (no green cones) | #586688 | 0.067 |
| Tritanopia (no blue cones) | #007B7A | 0.036 |
| Achromatopsia (no color) | #6A6A6A | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #177488
#177488
oklch(51.7% 0.086 216.6)
- #935544
#935544
oklch(51.7% 0.087 36.2)
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 #177488, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.021
- Deep Aqua #08787F ΔE 0.022
- Ocean #017B92 ΔE 0.022
- Deep Turquoise #017374 ΔE 0.034
- Bluegreen #017A79 ΔE 0.036
- Ocean Blue #03719C ΔE 0.036
- Dark Aquamarine #017371 ΔE 0.039
- Teal #008080 ΔE 0.043
Use #177488 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.