#287EFA
Closest named color: Clear Blue (#247AFD). oklch(61.2% 0.202 258.6), rgb(40, 126, 250).
Aa
Black text reads best on this color (5.45:1).
About this color
#287EFA is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.202 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.012 away. Black text reads best on it, at 5.45:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.202) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.45:1 |
| White text | 3.84:1 |
Values
| HEX | #287EFA |
| RGB | rgb(40, 126, 250) |
| HSL | hsl(215, 95%, 57%) |
| OKLCH | oklch(61.2% 0.202 258.6) |
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 #287EFA | 3.84:1 | AA large text | Lc -70.9 | Content text, not long reading |
| Black text on #287EFA | 5.45:1 | AA | Lc 38.7 | Non-text elements, placeholder text |
| #287EFA text on white | 3.84:1 | AA large text | Lc 65.4 | Content text, not long reading |
| #287EFA text on black | 5.45:1 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DFEBFE
oklch(93.7% 0.029 259.6)
-
Step 200
200
#C4DBFE
oklch(88.6% 0.054 258.7)
-
Step 300
300
#9BC2FF
oklch(80.8% 0.097 259.2)
-
Step 400
400
#62A0FF
oklch(70.7% 0.154 258.7)
-
Step 500
500 (this color)
#287EFA
oklch(61.2% 0.202 258.6)
-
Step 600
600
#006BEB
oklch(55.7% 0.21 258.5)
-
Step 700
700
#0059C7
oklch(49% 0.186 258.6)
-
Step 800
800
#0049A5
oklch(42.7% 0.162 258.5)
-
Step 900
900
#0A3E86
oklch(37.8% 0.132 258.5)
-
Step 950
950
#09254E
oklch(27.1% 0.083 258.4)
#287EFA 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) | #2E8CFF | 0.037 |
| Deuteranopia (no green cones) | #0079F8 | 0.020 |
| Tritanopia (no blue cones) | #009CB0 | 0.154 |
| Achromatopsia (no color) | #828282 | 0.202 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #287EFA
#287EFA
oklch(61.2% 0.202 258.6)
- #AD7900
#AD7900
oklch(61.3% 0.128 78.6)
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 #287EFA, closest first.
No curated palette has a color within ΔE 0.04 of #287EFA.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.012
- Dodger Blue #1E90FF ΔE 0.045
- Cerulean Blue #056EEE ΔE 0.048
- Cornflower #6A79F7 ΔE 0.059
- Royal Blue #4169E1 ΔE 0.061
- Dark Sky Blue #448EE4 ΔE 0.062
- Bright Blue #0165FC ΔE 0.065
- Soft Blue #6488EA ΔE 0.065
Use #287EFA 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.