#2D8BD0
Closest named color: Water Blue (#0E87CC). oklch(61.5% 0.135 245.2), rgb(45, 139, 208).
Aa
Black text reads best on this color (5.71:1).
About this color
#2D8BD0 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.135 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.019 away. Black text reads best on it, at 5.71:1.
| Hue family | Blues |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.71:1 |
| White text | 3.67:1 |
Values
| HEX | #2D8BD0 |
| RGB | rgb(45, 139, 208) |
| HSL | hsl(205, 64%, 50%) |
| OKLCH | oklch(61.5% 0.135 245.2) |
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 #2D8BD0 | 3.67:1 | AA large text | Lc -69.4 | Content text, not long reading |
| Black text on #2D8BD0 | 5.71:1 | AA | Lc 40.2 | Non-text elements, placeholder text |
| #2D8BD0 text on white | 3.67:1 | AA large text | Lc 63.9 | Content text, not long reading |
| #2D8BD0 text on black | 5.71:1 | AA | Lc -37.7 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0ECF6
oklch(93.7% 0.019 243)
-
Step 200
200
#C6DCF0
oklch(88.4% 0.036 245.7)
-
Step 300
300
#9DC6E9
oklch(80.9% 0.066 244.5)
-
Step 400
400
#65A7DE
oklch(70.7% 0.106 245.2)
-
Step 500
500 (this color)
#2D8BD0
oklch(61.5% 0.135 245.2)
-
Step 600
600
#0079BF
oklch(55.7% 0.14 245)
-
Step 700
700
#0065A2
oklch(49% 0.125 245.5)
-
Step 800
800
#005386
oklch(42.8% 0.108 245.3)
-
Step 900
900
#0B456D
oklch(37.7% 0.088 245.2)
-
Step 950
950
#0A2940
oklch(27.1% 0.056 244.7)
#2D8BD0 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) | #6B8ED3 | 0.057 |
| Deuteranopia (no green cones) | #547FCF | 0.041 |
| Tritanopia (no blue cones) | #009CA4 | 0.096 |
| Achromatopsia (no color) | #858585 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D8BD0
#2D8BD0
oklch(61.5% 0.135 245.2)
- #BB710B
#BB710B
oklch(61.6% 0.135 65.2)
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 #2D8BD0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.019
- Dark Sky Blue #448EE4 ΔE 0.036
- Cool Blue #4984B8 ΔE 0.039
- Steel Blue #4682B4 ΔE 0.045
- Blue NCS #118AB2 ΔE 0.049
- Windows Blue #3778BF ΔE 0.054
- Faded Blue #658CBB ΔE 0.056
- Off Blue #5684AE ΔE 0.056
Use #2D8BD0 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.