#017AB9
Closest named color: Nice Blue (#107AB0). oklch(55.5% 0.132 242.2), rgb(1, 122, 185).
Aa
White text reads best on this color (4.68:1).
About this color
#017AB9 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.132 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Nice Blue (#107AB0), ΔE 0.014 away. White text reads best on it, at 4.68:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Nice Blue (#107AB0) |
| Black text | 4.48:1 |
| White text | 4.68:1 |
Values
| HEX | #017AB9 |
| RGB | rgb(1, 122, 185) |
| HSL | hsl(201, 99%, 36%) |
| OKLCH | oklch(55.5% 0.132 242.2) |
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 #017AB9 | 4.68:1 | AA | Lc -77.3 | Fine for body text |
| Black text on #017AB9 | 4.48:1 | AA large text | Lc 32.2 | Non-text elements, placeholder text |
| #017AB9 text on white | 4.68:1 | AA | Lc 71.9 | Content text, not long reading |
| #017AB9 text on black | 4.48:1 | AA large text | Lc -29.8 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF5
oklch(93.7% 0.018 240)
-
Step 200
200
#C7DCEE
oklch(88.4% 0.034 244)
-
Step 300
300
#A0C6E4
oklch(80.9% 0.059 242.2)
-
Step 400
400
#69A8D7
oklch(70.8% 0.095 242.1)
-
Step 500
500
#3A91CC
oklch(63.1% 0.121 242.1)
-
Step 600
600 (this color)
#017AB9
oklch(55.5% 0.132 242.2)
-
Step 700
700
#00679D
oklch(49.2% 0.117 242)
-
Step 800
800
#005481
oklch(42.7% 0.101 241.9)
-
Step 900
900
#114668
oklch(37.8% 0.079 242.1)
-
Step 950
950
#0C293D
oklch(27% 0.051 242.2)
#017AB9 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) | #5B7CBC | 0.060 |
| Deuteranopia (no green cones) | #446DB8 | 0.046 |
| Tritanopia (no blue cones) | #008A91 | 0.089 |
| Achromatopsia (no color) | #747474 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #017AB9
#017AB9
oklch(55.5% 0.132 242.2)
- #A75F00
#A75F00
oklch(55.6% 0.128 62.1)
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 #017AB9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Nice Blue #107AB0 ΔE 0.014
- Windows Blue #3778BF ΔE 0.026
- Flat Blue #3C73A8 ΔE 0.036
- Mid Blue #276AB3 ΔE 0.044
- Water Blue #0E87CC ΔE 0.044
- Muted Blue #3B719F ΔE 0.046
- Steel Blue #4682B4 ΔE 0.047
- Ocean Blue #03719C ΔE 0.049
Use #017AB9 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.