#4F87DA
Closest named color: Dark Sky Blue (#448EE4). oklch(62.4% 0.139 258.1), rgb(79, 135, 218).
Aa
Black text reads best on this color (5.81:1).
About this color
#4F87DA is a medium-light, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.139 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.022 away. Black text reads best on it, at 5.81:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.81:1 |
| White text | 3.61:1 |
Values
| HEX | #4F87DA |
| RGB | rgb(79, 135, 218) |
| HSL | hsl(216, 65%, 58%) |
| OKLCH | oklch(62.4% 0.139 258.1) |
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 #4F87DA | 3.61:1 | AA large text | Lc -69.0 | Content text, not long reading |
| Black text on #4F87DA | 5.81:1 | AA | Lc 40.6 | Non-text elements, placeholder text |
| #4F87DA text on white | 3.61:1 | AA large text | Lc 63.5 | Content text, not long reading |
| #4F87DA text on black | 5.81:1 | AA | Lc -38.2 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#CADAF3
oklch(88.4% 0.039 259.3)
-
Step 300
300
#A6C2ED
oklch(80.8% 0.068 258.9)
-
Step 400
400
#75A2E4
oklch(70.7% 0.109 257.8)
-
Step 500
500 (this color)
#4F87DA
oklch(62.4% 0.139 258.1)
-
Step 600
600
#3571CA
oklch(55.5% 0.152 258.4)
-
Step 700
700
#275EAF
oklch(49% 0.142 258.4)
-
Step 800
800
#224E8D
oklch(42.8% 0.115 257.8)
-
Step 900
900
#214171
oklch(37.7% 0.091 258.4)
-
Step 950
950
#142642
oklch(26.9% 0.058 258.9)
#4F87DA 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) | #628EDD | 0.029 |
| Deuteranopia (no green cones) | #4F81D8 | 0.016 |
| Tritanopia (no blue cones) | #009AA6 | 0.115 |
| Achromatopsia (no color) | #878787 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F87DA
#4F87DA
oklch(62.4% 0.139 258.1)
- #B27C00
#B27C00
oklch(62.5% 0.13 78.1)
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 #4F87DA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.022
- Soft Blue #6488EA ΔE 0.034
- Chefchaouen Blue #4895EF ΔE 0.044
- Water Blue #0E87CC ΔE 0.045
- Cornflower Blue #6495ED ΔE 0.051
- Cool Blue #4984B8 ΔE 0.053
- Faded Blue #658CBB ΔE 0.057
- Steel Blue #4682B4 ΔE 0.059
Use #4F87DA 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.