#4E91DF
Closest named color: Dark Sky Blue (#448EE4). oklch(64.8% 0.136 253.6), rgb(78, 145, 223).
Aa
Black text reads best on this color (6.43:1).
About this color
#4E91DF is a medium-light, moderately saturated blue. In OKLCH its lightness is 65%, its chroma 0.136 and its hue 254°. 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 6.43:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.43:1 |
| White text | 3.26:1 |
Values
| HEX | #4E91DF |
| RGB | rgb(78, 145, 223) |
| HSL | hsl(212, 69%, 59%) |
| OKLCH | oklch(64.8% 0.136 253.6) |
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 #4E91DF | 3.26:1 | AA large text | Lc -65.1 | Content text, not long reading |
| Black text on #4E91DF | 6.43:1 | AA | Lc 44.4 | Non-text elements, placeholder text |
| #4E91DF text on white | 3.26:1 | AA large text | Lc 59.7 | Large or bold text, headings |
| #4E91DF text on black | 6.43:1 | AA | Lc -42.1 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C9DBF2
oklch(88.5% 0.037 254.6)
-
Step 300
300
#A3C4EB
oklch(81% 0.066 252.8)
-
Step 400
400
#70A4E2
oklch(70.7% 0.107 253.5)
-
Step 500
500 (this color)
#4E91DF
oklch(64.8% 0.136 253.6)
-
Step 600
600
#2874C7
oklch(55.6% 0.148 253.7)
-
Step 700
700
#1A61AC
oklch(49.1% 0.138 253.7)
-
Step 800
800
#194F8B
oklch(42.6% 0.114 254)
-
Step 900
900
#1B426F
oklch(37.6% 0.089 253.9)
-
Step 950
950
#112741
oklch(26.9% 0.056 253.9)
#4E91DF 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) | #6F96E2 | 0.038 |
| Deuteranopia (no green cones) | #5B88DD | 0.025 |
| Tritanopia (no blue cones) | #00A3AD | 0.109 |
| Achromatopsia (no color) | #8E8E8E | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4E91DF
#4E91DF
oklch(64.8% 0.136 253.6)
- #BF8008
#BF8008
oklch(64.9% 0.136 74)
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 #4E91DF, 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
- Chefchaouen Blue #4895EF ΔE 0.024
- Cornflower Blue #6495ED ΔE 0.033
- Soft Blue #6488EA ΔE 0.037
- Dodger Blue #1E90FF ΔE 0.054
- Faded Blue #658CBB ΔE 0.055
- Water Blue #0E87CC ΔE 0.056
- Cool Blue #4984B8 ΔE 0.064
Use #4E91DF 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.