#008AC9
Closest named color: Water Blue (#0E87CC). oklch(60.3% 0.136 239.2), rgb(0, 138, 201).
Aa
Black text reads best on this color (5.47:1).
About this color
#008AC9 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.136 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.011 away. Black text reads best on it, at 5.47:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.47:1 |
| White text | 3.83:1 |
Values
| HEX | #008AC9 |
| RGB | rgb(0, 138, 201) |
| HSL | hsl(199, 100%, 39%) |
| OKLCH | oklch(60.3% 0.136 239.2) |
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 #008AC9 | 3.83:1 | AA large text | Lc -70.7 | Content text, not long reading |
| Black text on #008AC9 | 5.47:1 | AA | Lc 38.9 | Non-text elements, placeholder text |
| #008AC9 text on white | 3.83:1 | AA large text | Lc 65.2 | Content text, not long reading |
| #008AC9 text on black | 5.47:1 | AA | Lc -36.5 | 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 500.
-
Step 50
50
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DFECF6
oklch(93.6% 0.019 240.7)
-
Step 200
200
#C4DDEF
oklch(88.5% 0.036 239.2)
-
Step 300
300
#99C7E8
oklch(80.9% 0.067 239.8)
-
Step 400
400
#5CA9DC
oklch(70.6% 0.107 239.7)
-
Step 500
500 (this color)
#008AC9
oklch(60.3% 0.136 239.2)
-
Step 600
600
#007BB4
oklch(55.5% 0.126 239.3)
-
Step 700
700
#006898
oklch(49.2% 0.11 238.7)
-
Step 800
800
#00557E
oklch(42.8% 0.097 239.2)
-
Step 900
900
#00476A
oklch(37.9% 0.085 239)
-
Step 950
950
#042A3F
oklch(27.1% 0.056 238.5)
#008AC9 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) | #6B8BCC | 0.070 |
| Deuteranopia (no green cones) | #537BC8 | 0.055 |
| Tritanopia (no blue cones) | #009AA0 | 0.089 |
| Achromatopsia (no color) | #828282 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #008AC9
#008AC9
oklch(60.3% 0.136 239.2)
- #BB6A13
#BB6A13
oklch(60.4% 0.136 59.6)
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 #008AC9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.011
- Blue NCS #118AB2 ΔE 0.036
- Cool Blue #4984B8 ΔE 0.039
- Steel Blue #4682B4 ΔE 0.042
- Windows Blue #3778BF ΔE 0.050
- Nice Blue #107AB0 ΔE 0.054
- Dark Sky Blue #448EE4 ΔE 0.054
- Off Blue #5684AE ΔE 0.057
Use #008AC9 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.