#2287E5
Closest named color: Dark Sky Blue (#448EE4). oklch(61.6% 0.167 251.7), rgb(34, 135, 229).
Aa
Black text reads best on this color (5.66:1).
About this color
#2287E5 is a medium-dark, vivid blue. In OKLCH its lightness is 62%, its chroma 0.167 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.031 away. Black text reads best on it, at 5.66:1.
| Hue family | Blues |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.66:1 |
| White text | 3.70:1 |
Values
| HEX | #2287E5 |
| RGB | rgb(34, 135, 229) |
| HSL | hsl(209, 79%, 52%) |
| OKLCH | oklch(61.6% 0.167 251.7) |
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 #2287E5 | 3.70:1 | AA large text | Lc -69.6 | Content text, not long reading |
| Black text on #2287E5 | 5.66:1 | AA | Lc 40.0 | Non-text elements, placeholder text |
| #2287E5 text on white | 3.70:1 | AA large text | Lc 64.1 | Content text, not long reading |
| #2287E5 text on black | 5.66:1 | AA | Lc -37.6 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBFA
oklch(93.6% 0.024 254)
-
Step 200
200
#C4DCF7
oklch(88.5% 0.045 251.4)
-
Step 300
300
#9AC5F4
oklch(81% 0.081 251.1)
-
Step 400
400
#5FA5EF
oklch(70.8% 0.13 251.3)
-
Step 500
500 (this color)
#2287E5
oklch(61.6% 0.167 251.7)
-
Step 600
600
#0074CF
oklch(55.5% 0.165 251.7)
-
Step 700
700
#0061AF
oklch(49% 0.146 251.8)
-
Step 800
800
#005091
oklch(42.8% 0.126 251.5)
-
Step 900
900
#034279
oklch(37.6% 0.11 251.9)
-
Step 950
950
#072747
oklch(26.9% 0.07 252)
#2287E5 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) | #588EE9 | 0.046 |
| Deuteranopia (no green cones) | #357DE3 | 0.026 |
| Tritanopia (no blue cones) | #009EAB | 0.123 |
| Achromatopsia (no color) | #858585 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2287E5
#2287E5
oklch(61.6% 0.167 251.7)
- #B57500
#B57500
oklch(61.5% 0.132 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 #2287E5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.031
- Water Blue #0E87CC ΔE 0.040
- Dodger Blue #1E90FF ΔE 0.043
- Chefchaouen Blue #4895EF ΔE 0.049
- Clear Blue #247AFD ΔE 0.052
- Soft Blue #6488EA ΔE 0.054
- Windows Blue #3778BF ΔE 0.064
- Cornflower Blue #6495ED ΔE 0.069
Use #2287E5 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.