#178595
Closest named color: Teal Blue (#01889F). oklch(56.7% 0.093 210.3), rgb(23, 133, 149).
Aa
Black text reads best on this color (4.82:1).
About this color
#178595 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.093 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.015 away. Black text reads best on it, at 4.82:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 4.82:1 |
| White text | 4.35:1 |
Values
| HEX | #178595 |
| RGB | rgb(23, 133, 149) |
| HSL | hsl(188, 73%, 34%) |
| OKLCH | oklch(56.7% 0.093 210.3) |
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 #178595 | 4.35:1 | AA large text | Lc -75.2 | Fine for body text |
| Black text on #178595 | 4.82:1 | AA | Lc 34.4 | Non-text elements, placeholder text |
| #178595 text on white | 4.35:1 | AA large text | Lc 69.7 | Content text, not long reading |
| #178595 text on black | 4.82:1 | AA | Lc -32.0 | Non-text elements, placeholder text |
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
#F1F6F7
oklch(97% 0.005 211)
-
Step 100
100
#E1ECEE
oklch(93.5% 0.012 209.8)
-
Step 200
200
#C8DEE2
oklch(88.5% 0.024 209.8)
-
Step 300
300
#A2C9D0
oklch(81% 0.042 209.7)
-
Step 400
400
#6DACB8
oklch(70.6% 0.067 210.9)
-
Step 500
500
#4098A6
oklch(63.2% 0.086 209.5)
-
Step 600
600 (this color)
#178595
oklch(56.7% 0.093 210.3)
-
Step 700
700
#006D7B
oklch(49% 0.085 210.2)
-
Step 800
800
#075965
oklch(42.6% 0.072 211)
-
Step 900
900
#144A52
oklch(37.8% 0.056 209.2)
-
Step 950
950
#0E2B30
oklch(27% 0.036 210.5)
#178595 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) | #788096 | 0.088 |
| Deuteranopia (no green cones) | #677495 | 0.079 |
| Tritanopia (no blue cones) | #008C8A | 0.032 |
| Achromatopsia (no color) | #797979 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #178595
#178595
oklch(56.7% 0.093 210.3)
- #A66155
#A66155
oklch(56.7% 0.092 30.7)
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 #178595, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.015
- Dark Cyan #008B8B ΔE 0.028
- Ocean #017B92 ΔE 0.032
- Teal #008080 ΔE 0.035
- Teal Green #0A9396 ΔE 0.042
- Cerulean #457B9D ΔE 0.044
- Blue NCS #118AB2 ΔE 0.044
- Deep Aqua #08787F ΔE 0.047
Use #178595 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.