#017C9B
Closest named color: Ocean (#017B92). oklch(54.4% 0.101 223.3), rgb(1, 124, 155).
Aa
White text reads best on this color (4.81:1).
About this color
#017C9B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 54%, its chroma 0.101 and its hue 223°. 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 4.81:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.35:1 |
| White text | 4.81:1 |
Values
| HEX | #017C9B |
| RGB | rgb(1, 124, 155) |
| HSL | hsl(192, 99%, 31%) |
| OKLCH | oklch(54.4% 0.101 223.3) |
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 #017C9B | 4.81:1 | AA | Lc -78.3 | Fine for body text |
| Black text on #017C9B | 4.35:1 | AA large text | Lc 31.2 | Non-text elements, placeholder text |
| #017C9B text on white | 4.81:1 | AA | Lc 72.8 | Content text, not long reading |
| #017C9B text on black | 4.35:1 | AA large text | Lc -28.8 | 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C8DDE6
oklch(88.5% 0.026 225.3)
-
Step 300
300
#A1C8D6
oklch(80.9% 0.046 221.7)
-
Step 400
400
#6CABC2
oklch(70.7% 0.073 223.2)
-
Step 500
500
#3E96B3
oklch(63.2% 0.093 223.1)
-
Step 600
600 (this color)
#017C9B
oklch(54.4% 0.101 223.3)
-
Step 700
700
#006B87
oklch(49% 0.092 224)
-
Step 800
800
#05586E
oklch(42.8% 0.078 222.8)
-
Step 900
900
#134859
oklch(37.6% 0.061 223.7)
-
Step 950
950
#0E2A34
oklch(26.9% 0.038 224.5)
#017C9B 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) | #6A799D | 0.079 |
| Deuteranopia (no green cones) | #596C9B | 0.071 |
| Tritanopia (no blue cones) | #008586 | 0.050 |
| Achromatopsia (no color) | #727272 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #017C9B
#017C9B
oklch(54.4% 0.101 223.3)
- #A05B3D
#A05B3D
oklch(54.4% 0.101 43.7)
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 #017C9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.014
- Sea Blue #047495 ΔE 0.024
- Ocean Blue #03719C ΔE 0.034
- Teal Blue #01889F ΔE 0.036
- Cerulean #457B9D ΔE 0.036
- Nice Blue #107AB0 ΔE 0.036
- Muted Blue #3B719F ΔE 0.042
- Dull Blue #49759C ΔE 0.043
Use #017C9B 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.