#2A85DA
Closest named color: Water Blue (#0E87CC). oklch(60.7% 0.154 250.9), rgb(42, 133, 218).
Aa
Black text reads best on this color (5.46:1).
About this color
#2A85DA is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.154 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.026 away. Black text reads best on it, at 5.46:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.154) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.46:1 |
| White text | 3.84:1 |
Values
| HEX | #2A85DA |
| RGB | rgb(42, 133, 218) |
| HSL | hsl(209, 70%, 51%) |
| OKLCH | oklch(60.7% 0.154 250.9) |
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 #2A85DA | 3.84:1 | AA large text | Lc -71.0 | Content text, not long reading |
| Black text on #2A85DA | 5.46:1 | AA | Lc 38.6 | Non-text elements, placeholder text |
| #2A85DA text on white | 3.84:1 | AA large text | Lc 65.5 | Content text, not long reading |
| #2A85DA text on black | 5.46:1 | AA | Lc -36.2 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF8
oklch(93.6% 0.021 252.5)
-
Step 200
200
#C5DCF4
oklch(88.5% 0.041 249.4)
-
Step 300
300
#9DC5F0
oklch(81% 0.075 250.6)
-
Step 400
400
#64A5E9
oklch(70.7% 0.121 250.9)
-
Step 500
500 (this color)
#2A85DA
oklch(60.7% 0.154 250.9)
-
Step 600
600
#0075CD
oklch(55.6% 0.161 250.9)
-
Step 700
700
#0062AE
oklch(49.1% 0.143 251.1)
-
Step 800
800
#005090
oklch(42.7% 0.125 251.1)
-
Step 900
900
#0C4374
oklch(37.7% 0.1 250.8)
-
Step 950
950
#0A2844
oklch(27.1% 0.063 250.1)
#2A85DA 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) | #5C8BDD | 0.046 |
| Deuteranopia (no green cones) | #407BD8 | 0.028 |
| Tritanopia (no blue cones) | #0099A5 | 0.112 |
| Achromatopsia (no color) | #828282 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A85DA
#2A85DA
oklch(60.7% 0.154 250.9)
- #B27200
#B27200
oklch(60.6% 0.131 70.8)
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 #2A85DA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.026
- Dark Sky Blue #448EE4 ΔE 0.035
- Windows Blue #3778BF ΔE 0.049
- Cool Blue #4984B8 ΔE 0.054
- Chefchaouen Blue #4895EF ΔE 0.057
- Soft Blue #6488EA ΔE 0.058
- Dodger Blue #1E90FF ΔE 0.058
- Steel Blue #4682B4 ΔE 0.059
Use #2A85DA 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.