#2A88E9
Closest named color: Dark Sky Blue (#448EE4). oklch(62.3% 0.169 253.1), rgb(42, 136, 233).
Aa
Black text reads best on this color (5.79:1).
About this color
#2A88E9 is a medium-light, vivid blue. In OKLCH its lightness is 62%, its chroma 0.169 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.027 away. Black text reads best on it, at 5.79:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.169) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.79:1 |
| White text | 3.62:1 |
Values
| HEX | #2A88E9 |
| RGB | rgb(42, 136, 233) |
| HSL | hsl(210, 81%, 54%) |
| OKLCH | oklch(62.3% 0.169 253.1) |
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 #2A88E9 | 3.62:1 | AA large text | Lc -68.8 | Content text, not long reading |
| Black text on #2A88E9 | 5.79:1 | AA | Lc 40.8 | Non-text elements, placeholder text |
| #2A88E9 text on white | 3.62:1 | AA large text | Lc 63.3 | Content text, not long reading |
| #2A88E9 text on black | 5.79:1 | AA | Lc -38.4 | 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
#C4DCF8
oklch(88.6% 0.047 252.4)
-
Step 300
300
#9BC4F5
oklch(80.8% 0.082 253.2)
-
Step 400
400
#61A4F1
oklch(70.7% 0.133 253.1)
-
Step 500
500 (this color)
#2A88E9
oklch(62.3% 0.169 253.1)
-
Step 600
600
#0073D4
oklch(55.6% 0.172 253.1)
-
Step 700
700
#0060B3
oklch(49% 0.152 253.2)
-
Step 800
800
#004F94
oklch(42.8% 0.131 252.8)
-
Step 900
900
#07427A
oklch(37.8% 0.11 252.9)
-
Step 950
950
#082747
oklch(27% 0.069 252.5)
#2A88E9 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) | #5790ED | 0.043 |
| Deuteranopia (no green cones) | #347FE7 | 0.023 |
| Tritanopia (no blue cones) | #009FAD | 0.126 |
| Achromatopsia (no color) | #868686 | 0.169 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A88E9
#2A88E9
oklch(62.3% 0.169 253.1)
- #B67800
#B67800
oklch(62.2% 0.132 73.2)
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 #2A88E9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.027
- Dodger Blue #1E90FF ΔE 0.036
- Chefchaouen Blue #4895EF ΔE 0.044
- Water Blue #0E87CC ΔE 0.047
- Soft Blue #6488EA ΔE 0.048
- Clear Blue #247AFD ΔE 0.050
- Cornflower Blue #6495ED ΔE 0.063
- Cornflower #6A79F7 ΔE 0.069
Use #2A88E9 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.