#2B83E3
Closest named color: Dark Sky Blue (#448EE4). oklch(60.8% 0.167 253.9), rgb(43, 131, 227).
Aa
Black text reads best on this color (5.45:1).
About this color
#2B83E3 is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.167 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.037 away. Black text reads best on it, at 5.45:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.45:1 |
| White text | 3.84:1 |
Values
| HEX | #2B83E3 |
| RGB | rgb(43, 131, 227) |
| HSL | hsl(211, 77%, 53%) |
| OKLCH | oklch(60.8% 0.167 253.9) |
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 #2B83E3 | 3.84:1 | AA large text | Lc -71.0 | Content text, not long reading |
| Black text on #2B83E3 | 5.45:1 | AA | Lc 38.6 | Non-text elements, placeholder text |
| #2B83E3 text on white | 3.84:1 | AA large text | Lc 65.5 | Content text, not long reading |
| #2B83E3 text on black | 5.45:1 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#DFEBFA
oklch(93.6% 0.024 254)
-
Step 200
200
#C5DBF7
oklch(88.4% 0.045 254.5)
-
Step 300
300
#9CC4F5
oklch(80.9% 0.082 253.8)
-
Step 400
400
#64A4F0
oklch(70.8% 0.13 253.7)
-
Step 500
500 (this color)
#2B83E3
oklch(60.8% 0.167 253.9)
-
Step 600
600
#0072D7
oklch(55.6% 0.177 254)
-
Step 700
700
#0060B6
oklch(49.2% 0.156 253.8)
-
Step 800
800
#004E96
oklch(42.7% 0.135 253.8)
-
Step 900
900
#0C4179
oklch(37.6% 0.109 254.1)
-
Step 950
950
#0A2747
oklch(27.1% 0.069 253.6)
#2B83E3 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) | #528BE7 | 0.040 |
| Deuteranopia (no green cones) | #307AE1 | 0.023 |
| Tritanopia (no blue cones) | #009AA8 | 0.125 |
| Achromatopsia (no color) | #828282 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B83E3
#2B83E3
oklch(60.8% 0.167 253.9)
- #B07500
#B07500
oklch(60.9% 0.129 74)
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 #2B83E3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.037
- Water Blue #0E87CC ΔE 0.041
- Clear Blue #247AFD ΔE 0.048
- Dodger Blue #1E90FF ΔE 0.050
- Soft Blue #6488EA ΔE 0.054
- Chefchaouen Blue #4895EF ΔE 0.057
- Windows Blue #3778BF ΔE 0.058
- Cerulean Blue #056EEE ΔE 0.063
Use #2B83E3 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.