#4F89EB
Closest named color: Dark Sky Blue (#448EE4). oklch(63.8% 0.16 260.2), rgb(79, 137, 235).
Aa
Black text reads best on this color (6.11:1).
About this color
#4F89EB is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.160 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.020 away. Black text reads best on it, at 6.11:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.160) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.11:1 |
| White text | 3.43:1 |
Values
| HEX | #4F89EB |
| RGB | rgb(79, 137, 235) |
| HSL | hsl(218, 80%, 62%) |
| OKLCH | oklch(63.8% 0.16 260.2) |
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 #4F89EB | 3.43:1 | AA large text | Lc -67.1 | Content text, not long reading |
| Black text on #4F89EB | 6.11:1 | AA | Lc 42.5 | Non-text elements, placeholder text |
| #4F89EB text on white | 3.43:1 | AA large text | Lc 61.6 | Content text, not long reading |
| #4F89EB text on black | 6.11:1 | AA | Lc -40.1 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAF9
oklch(93.5% 0.023 260.7)
-
Step 200
200
#C9DAF7
oklch(88.5% 0.044 261.2)
-
Step 300
300
#A4C2F4
oklch(81% 0.078 260.5)
-
Step 400
400
#72A1EE
oklch(70.8% 0.124 259.9)
-
Step 500
500 (this color)
#4F89EB
oklch(63.8% 0.16 260.2)
-
Step 600
600
#306ED7
oklch(55.6% 0.174 260.3)
-
Step 700
700
#235BBA
oklch(49% 0.161 260.4)
-
Step 800
800
#1E4B97
oklch(42.7% 0.134 260.3)
-
Step 900
900
#1E3F78
oklch(37.6% 0.105 260.5)
-
Step 950
950
#122646
oklch(27.1% 0.065 259.4)
#4F89EB 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) | #5B92EF | 0.028 |
| Deuteranopia (no green cones) | #4284E9 | 0.019 |
| Tritanopia (no blue cones) | #00A0AE | 0.131 |
| Achromatopsia (no color) | #8A8A8A | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F89EB
#4F89EB
oklch(63.8% 0.16 260.2)
- #B58100
#B58100
oklch(63.8% 0.132 80.2)
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 #4F89EB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.020
- Soft Blue #6488EA ΔE 0.021
- Chefchaouen Blue #4895EF ΔE 0.031
- Dodger Blue #1E90FF ΔE 0.040
- Cornflower Blue #6495ED ΔE 0.041
- Cornflower #6A79F7 ΔE 0.052
- Clear Blue #247AFD ΔE 0.061
- Water Blue #0E87CC ΔE 0.063
Use #4F89EB 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.