#2A8BC1
Closest named color: Water Blue (#0E87CC). oklch(60.7% 0.119 238.4), rgb(42, 139, 193).
Aa
Black text reads best on this color (5.56:1).
About this color
#2A8BC1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.119 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.025 away. Black text reads best on it, at 5.56:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.56:1 |
| White text | 3.77:1 |
Values
| HEX | #2A8BC1 |
| RGB | rgb(42, 139, 193) |
| HSL | hsl(201, 64%, 46%) |
| OKLCH | oklch(60.7% 0.119 238.4) |
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 #2A8BC1 | 3.77:1 | AA large text | Lc -70.4 | Content text, not long reading |
| Black text on #2A8BC1 | 5.56:1 | AA | Lc 39.2 | Non-text elements, placeholder text |
| #2A8BC1 text on white | 3.77:1 | AA large text | Lc 64.9 | Content text, not long reading |
| #2A8BC1 text on black | 5.56:1 | AA | Lc -36.8 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF4
oklch(93.6% 0.017 236.7)
-
Step 200
200
#C6DDED
oklch(88.5% 0.033 238.2)
-
Step 300
300
#9EC7E2
oklch(80.9% 0.058 237.3)
-
Step 400
400
#66A9D4
oklch(70.7% 0.093 238.2)
-
Step 500
500 (this color)
#2A8BC1
oklch(60.7% 0.119 238.4)
-
Step 600
600
#007CB3
oklch(55.7% 0.124 238.2)
-
Step 700
700
#006897
oklch(49.1% 0.109 238.1)
-
Step 800
800
#00557D
oklch(42.7% 0.096 238.5)
-
Step 900
900
#0B4766
oklch(37.8% 0.078 237.8)
-
Step 950
950
#0A293C
oklch(26.9% 0.05 239.7)
#2A8BC1 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) | #718BC3 | 0.065 |
| Deuteranopia (no green cones) | #5D7DC0 | 0.053 |
| Tritanopia (no blue cones) | #00999E | 0.078 |
| Achromatopsia (no color) | #838383 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A8BC1
#2A8BC1
oklch(60.7% 0.119 238.4)
- #B66E2F
#B66E2F
oklch(60.6% 0.119 58.4)
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 #2A8BC1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.025
- Blue NCS #118AB2 ΔE 0.026
- Cool Blue #4984B8 ΔE 0.027
- Steel Blue #4682B4 ΔE 0.031
- Off Blue #5684AE ΔE 0.041
- Dusty Blue #5A86AD ΔE 0.044
- Faded Blue #658CBB ΔE 0.050
- Windows Blue #3778BF ΔE 0.053
Use #2A8BC1 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.