#2B83D7
Closest named color: Water Blue (#0E87CC). oklch(60.1% 0.152 251.2), rgb(43, 131, 215).
Aa
Black text reads best on this color (5.33:1).
About this color
#2B83D7 is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.152 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.024 away. Black text reads best on it, at 5.33:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.33:1 |
| White text | 3.93:1 |
Values
| HEX | #2B83D7 |
| RGB | rgb(43, 131, 215) |
| HSL | hsl(209, 68%, 51%) |
| OKLCH | oklch(60.1% 0.152 251.2) |
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 #2B83D7 | 3.93:1 | AA large text | Lc -71.8 | Content text, not long reading |
| Black text on #2B83D7 | 5.33:1 | AA | Lc 37.7 | Non-text elements, placeholder text |
| #2B83D7 text on white | 3.93:1 | AA large text | Lc 66.3 | Content text, not long reading |
| #2B83D7 text on black | 5.33:1 | AA | Lc -35.3 | 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
#C6DCF4
oklch(88.6% 0.041 250.6)
-
Step 300
300
#9DC5F0
oklch(81% 0.075 250.6)
-
Step 400
400
#66A5E8
oklch(70.7% 0.118 251.2)
-
Step 500
500 (this color)
#2B83D7
oklch(60.1% 0.152 251.2)
-
Step 600
600
#0075CE
oklch(55.7% 0.162 251.1)
-
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
#0E4374
oklch(37.7% 0.099 251.2)
-
Step 950
950
#0B2744
oklch(26.9% 0.064 252.1)
#2B83D7 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) | #5A89DA | 0.044 |
| Deuteranopia (no green cones) | #3F79D5 | 0.027 |
| Tritanopia (no blue cones) | #0097A2 | 0.113 |
| Achromatopsia (no color) | #808080 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B83D7
#2B83D7
oklch(60.1% 0.152 251.2)
- #B07100
#B07100
oklch(60.1% 0.129 71.1)
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 #2B83D7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.024
- Dark Sky Blue #448EE4 ΔE 0.041
- Windows Blue #3778BF ΔE 0.043
- Cool Blue #4984B8 ΔE 0.052
- Steel Blue #4682B4 ΔE 0.055
- Soft Blue #6488EA ΔE 0.061
- Chefchaouen Blue #4895EF ΔE 0.063
- Dodger Blue #1E90FF ΔE 0.064
Use #2B83D7 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.