#4E91DB
Closest named color: Dark Sky Blue (#448EE4). oklch(64.6% 0.131 252.5), rgb(78, 145, 219).
Aa
Black text reads best on this color (6.39:1).
About this color
#4E91DB is a medium-light, moderately saturated blue. In OKLCH its lightness is 65%, its chroma 0.131 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.019 away. Black text reads best on it, at 6.39:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.131) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.39:1 |
| White text | 3.28:1 |
Values
| HEX | #4E91DB |
| RGB | rgb(78, 145, 219) |
| HSL | hsl(211, 66%, 58%) |
| OKLCH | oklch(64.6% 0.131 252.5) |
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 #4E91DB | 3.28:1 | AA large text | Lc -65.4 | Content text, not long reading |
| Black text on #4E91DB | 6.39:1 | AA | Lc 44.1 | Non-text elements, placeholder text |
| #4E91DB text on white | 3.28:1 | AA large text | Lc 59.9 | Large or bold text, headings |
| #4E91DB text on black | 6.39:1 | AA | Lc -41.8 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C9DBF1
oklch(88.5% 0.036 253.5)
-
Step 300
300
#A4C4EA
oklch(81% 0.064 253)
-
Step 400
400
#71A4DF
oklch(70.6% 0.103 252.8)
-
Step 500
500 (this color)
#4E91DB
oklch(64.6% 0.131 252.5)
-
Step 600
600
#2975C3
oklch(55.6% 0.142 252.4)
-
Step 700
700
#1B62A9
oklch(49.2% 0.132 252.5)
-
Step 800
800
#195089
oklch(42.7% 0.11 252.7)
-
Step 900
900
#1C436D
oklch(37.7% 0.085 252.5)
-
Step 950
950
#112740
oklch(26.9% 0.055 253.1)
#4E91DB 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) | #7195DE | 0.040 |
| Deuteranopia (no green cones) | #5D88DA | 0.026 |
| Tritanopia (no blue cones) | #00A2AC | 0.104 |
| Achromatopsia (no color) | #8E8E8E | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4E91DB
#4E91DB
oklch(64.6% 0.131 252.5)
- #BE7F19
#BE7F19
oklch(64.6% 0.131 72.4)
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 #4E91DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.019
- Chefchaouen Blue #4895EF ΔE 0.030
- Cornflower Blue #6495ED ΔE 0.037
- Soft Blue #6488EA ΔE 0.041
- Faded Blue #658CBB ΔE 0.050
- Water Blue #0E87CC ΔE 0.054
- Cool Blue #4984B8 ΔE 0.059
- Dodger Blue #1E90FF ΔE 0.060
Use #4E91DB 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.