#4F91ED
Closest named color: Chefchaouen Blue (#4895EF). oklch(65.6% 0.154 257.1), rgb(79, 145, 237).
Aa
Black text reads best on this color (6.60:1).
About this color
#4F91ED is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.154 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.011 away. Black text reads best on it, at 6.60:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.154) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.60:1 |
| White text | 3.17:1 |
Values
| HEX | #4F91ED |
| RGB | rgb(79, 145, 237) |
| HSL | hsl(215, 81%, 62%) |
| OKLCH | oklch(65.6% 0.154 257.1) |
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 #4F91ED | 3.17:1 | AA large text | Lc -64.1 | Content text, not long reading |
| Black text on #4F91ED | 6.60:1 | AA | Lc 45.4 | Large or bold text, headings |
| #4F91ED text on white | 3.17:1 | AA large text | Lc 58.7 | Large or bold text, headings |
| #4F91ED text on black | 6.60:1 | AA | Lc -43.1 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF9
oklch(93.7% 0.022 256.7)
-
Step 200
200
#C8DBF5
oklch(88.5% 0.041 256.2)
-
Step 300
300
#A2C3F1
oklch(80.9% 0.075 256.7)
-
Step 400
400
#6FA2EB
oklch(70.7% 0.121 257.4)
-
Step 500
500 (this color)
#4F91ED
oklch(65.6% 0.154 257.1)
-
Step 600
600
#2771D2
oklch(55.6% 0.166 257)
-
Step 700
700
#195EB6
oklch(49.1% 0.155 257)
-
Step 800
800
#184D93
oklch(42.7% 0.128 257.1)
-
Step 900
900
#1A4175
oklch(37.7% 0.099 256.7)
-
Step 950
950
#102645
oklch(26.9% 0.064 257.3)
#4F91ED 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) | #6798F1 | 0.032 |
| Deuteranopia (no green cones) | #508AEB | 0.018 |
| Tritanopia (no blue cones) | #00A6B3 | 0.123 |
| Achromatopsia (no color) | #909090 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F91ED
#4F91ED
oklch(65.6% 0.154 257.1)
- #BF8400
#BF8400
oklch(65.6% 0.137 77.2)
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 #4F91ED, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.011
- Dark Sky Blue #448EE4 ΔE 0.019
- Cornflower Blue #6495ED ΔE 0.024
- Soft Blue #6488EA ΔE 0.028
- Dodger Blue #1E90FF ΔE 0.039
- Cornflower #6A79F7 ΔE 0.067
- Water Blue #0E87CC ΔE 0.070
- Perrywinkle #8F8CE7 ΔE 0.073
Use #4F91ED 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.