#4F8ADD
Closest named color: Dark Sky Blue (#448EE4). oklch(63.2% 0.14 257.2), rgb(79, 138, 221).
Aa
Black text reads best on this color (6.01:1).
About this color
#4F8ADD is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.140 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.015 away. Black text reads best on it, at 6.01:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.140) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.01:1 |
| White text | 3.49:1 |
Values
| HEX | #4F8ADD |
| RGB | rgb(79, 138, 221) |
| HSL | hsl(215, 68%, 59%) |
| OKLCH | oklch(63.2% 0.14 257.2) |
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 #4F8ADD | 3.49:1 | AA large text | Lc -67.7 | Content text, not long reading |
| Black text on #4F8ADD | 6.01:1 | AA | Lc 41.8 | Non-text elements, placeholder text |
| #4F8ADD text on white | 3.49:1 | AA large text | Lc 62.2 | Content text, not long reading |
| #4F8ADD text on black | 6.01:1 | AA | Lc -39.4 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#CADBF3
oklch(88.6% 0.038 257)
-
Step 300
300
#A5C3ED
oklch(81% 0.068 256.8)
-
Step 400
400
#74A2E4
oklch(70.6% 0.109 257.4)
-
Step 500
500 (this color)
#4F8ADD
oklch(63.2% 0.14 257.2)
-
Step 600
600
#3172CA
oklch(55.6% 0.152 257)
-
Step 700
700
#245FAF
oklch(49.1% 0.141 257.2)
-
Step 800
800
#1F4E8E
oklch(42.8% 0.118 257.1)
-
Step 900
900
#1F4171
oklch(37.6% 0.092 257.4)
-
Step 950
950
#132742
oklch(27.1% 0.057 256.4)
#4F8ADD 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) | #6590E0 | 0.030 |
| Deuteranopia (no green cones) | #5183DB | 0.018 |
| Tritanopia (no blue cones) | #009DA9 | 0.114 |
| Achromatopsia (no color) | #898989 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F8ADD
#4F8ADD
oklch(63.2% 0.14 257.2)
- #B67D00
#B67D00
oklch(63.2% 0.132 76.8)
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 #4F8ADD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.015
- Soft Blue #6488EA ΔE 0.031
- Chefchaouen Blue #4895EF ΔE 0.035
- Cornflower Blue #6495ED ΔE 0.044
- Water Blue #0E87CC ΔE 0.049
- Dodger Blue #1E90FF ΔE 0.055
- Faded Blue #658CBB ΔE 0.057
- Cool Blue #4984B8 ΔE 0.057
Use #4F8ADD 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.