#2B85DB
Closest named color: Water Blue (#0E87CC). oklch(60.8% 0.155 251.3), rgb(43, 133, 219).
Aa
Black text reads best on this color (5.48:1).
About this color
#2B85DB is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.155 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.028 away. Black text reads best on it, at 5.48:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.48:1 |
| White text | 3.83:1 |
Values
| HEX | #2B85DB |
| RGB | rgb(43, 133, 219) |
| HSL | hsl(209, 71%, 51%) |
| OKLCH | oklch(60.8% 0.155 251.3) |
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 #2B85DB | 3.83:1 | AA large text | Lc -70.9 | Content text, not long reading |
| Black text on #2B85DB | 5.48:1 | AA | Lc 38.7 | Non-text elements, placeholder text |
| #2B85DB text on white | 3.83:1 | AA large text | Lc 65.4 | Content text, not long reading |
| #2B85DB text on black | 5.48:1 | AA | Lc -36.3 | 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
#C5DCF5
oklch(88.5% 0.042 250.5)
-
Step 300
300
#9DC5F1
oklch(81% 0.076 251.2)
-
Step 400
400
#65A5E9
oklch(70.7% 0.12 251.2)
-
Step 500
500 (this color)
#2B85DB
oklch(60.8% 0.155 251.3)
-
Step 600
600
#0075CE
oklch(55.7% 0.162 251.1)
-
Step 700
700
#0062AF
oklch(49.2% 0.144 251.3)
-
Step 800
800
#005090
oklch(42.7% 0.125 251.1)
-
Step 900
900
#0C4375
oklch(37.8% 0.101 251.2)
-
Step 950
950
#0A2744
oklch(26.8% 0.064 251.5)
#2B85DB 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) | #5B8BDE | 0.045 |
| Deuteranopia (no green cones) | #3F7BD9 | 0.027 |
| Tritanopia (no blue cones) | #009AA5 | 0.116 |
| Achromatopsia (no color) | #828282 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B85DB
#2B85DB
oklch(60.8% 0.155 251.3)
- #B27300
#B27300
oklch(60.8% 0.13 71.6)
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 #2B85DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.028
- Dark Sky Blue #448EE4 ΔE 0.034
- Windows Blue #3778BF ΔE 0.050
- Cool Blue #4984B8 ΔE 0.056
- Chefchaouen Blue #4895EF ΔE 0.056
- Soft Blue #6488EA ΔE 0.057
- Dodger Blue #1E90FF ΔE 0.057
- Steel Blue #4682B4 ΔE 0.060
Use #2B85DB 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.