#017FA4
Closest named color: Nice Blue (#107AB0). oklch(55.6% 0.107 227.2), rgb(1, 127, 164).
Aa
White text reads best on this color (4.59:1).
About this color
#017FA4 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 56%, its chroma 0.107 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Nice Blue (#107AB0), ΔE 0.027 away. White text reads best on it, at 4.59:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Nice Blue (#107AB0) |
| Black text | 4.57:1 |
| White text | 4.59:1 |
Values
| HEX | #017FA4 |
| RGB | rgb(1, 127, 164) |
| HSL | hsl(194, 99%, 32%) |
| OKLCH | oklch(55.6% 0.107 227.2) |
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 #017FA4 | 4.59:1 | AA | Lc -76.8 | Fine for body text |
| Black text on #017FA4 | 4.57:1 | AA | Lc 32.8 | Non-text elements, placeholder text |
| #017FA4 text on white | 4.59:1 | AA | Lc 71.3 | Content text, not long reading |
| #017FA4 text on black | 4.57:1 | AA | Lc -30.4 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C8DDE7
oklch(88.5% 0.026 227.9)
-
Step 300
300
#A1C8D9
oklch(81% 0.048 226.3)
-
Step 400
400
#6AABC6
oklch(70.8% 0.077 226.4)
-
Step 500
500
#3B95B8
oklch(63.1% 0.099 227.4)
-
Step 600
600 (this color)
#017FA4
oklch(55.6% 0.107 227.2)
-
Step 700
700
#006B8A
oklch(49.2% 0.095 226.5)
-
Step 800
800
#005772
oklch(42.6% 0.083 227.6)
-
Step 900
900
#11485C
oklch(37.7% 0.064 227.2)
-
Step 950
950
#0D2A36
oklch(26.9% 0.041 228.4)
#017FA4 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) | #6B7DA6 | 0.078 |
| Deuteranopia (no green cones) | #586FA4 | 0.068 |
| Tritanopia (no blue cones) | #008A8B | 0.059 |
| Achromatopsia (no color) | #757575 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #017FA4
#017FA4
oklch(55.6% 0.107 227.2)
- #A65E38
#A65E38
oklch(55.7% 0.108 47.3)
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 #017FA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Nice Blue #107AB0 ΔE 0.027
- Ocean #017B92 ΔE 0.029
- Teal Blue #01889F ΔE 0.030
- Cerulean #457B9D ΔE 0.034
- Blue NCS #118AB2 ΔE 0.036
- Sea Blue #047495 ΔE 0.036
- Ocean Blue #03719C ΔE 0.041
- Flat Blue #3C73A8 ΔE 0.043
Use #017FA4 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.