#4D91C6
Closest named color: Faded Blue (#658CBB). oklch(63.5% 0.106 244.1), rgb(77, 145, 198).
Aa
Black text reads best on this color (6.18:1).
About this color
#4D91C6 is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.106 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.028 away. Black text reads best on it, at 6.18:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.18:1 |
| White text | 3.39:1 |
Values
| HEX | #4D91C6 |
| RGB | rgb(77, 145, 198) |
| HSL | hsl(206, 51%, 54%) |
| OKLCH | oklch(63.5% 0.106 244.1) |
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 #4D91C6 | 3.39:1 | AA large text | Lc -66.7 | Content text, not long reading |
| Black text on #4D91C6 | 6.18:1 | AA | Lc 42.8 | Non-text elements, placeholder text |
| #4D91C6 text on white | 3.39:1 | AA large text | Lc 61.3 | Content text, not long reading |
| #4D91C6 text on black | 6.18:1 | AA | Lc -40.4 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#CADCEB
oklch(88.6% 0.028 243.1)
-
Step 300
300
#A5C5E0
oklch(80.9% 0.052 243.9)
-
Step 400
400
#73A7D1
oklch(70.8% 0.083 243.7)
-
Step 500
500 (this color)
#4D91C6
oklch(63.5% 0.106 244.1)
-
Step 600
600
#2B79B1
oklch(55.5% 0.115 244.1)
-
Step 700
700
#1D6699
oklch(49.2% 0.107 244.2)
-
Step 800
800
#1B537C
oklch(42.7% 0.089 244.6)
-
Step 900
900
#1D4563
oklch(37.7% 0.068 243.8)
-
Step 950
950
#12293A
oklch(27.1% 0.043 242.6)
#4D91C6 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) | #7A92C8 | 0.050 |
| Deuteranopia (no green cones) | #6986C5 | 0.039 |
| Tritanopia (no blue cones) | #009EA3 | 0.082 |
| Achromatopsia (no color) | #8B8B8B | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4D91C6
#4D91C6
oklch(63.5% 0.106 244.1)
- #B77C40
#B77C40
oklch(63.5% 0.106 64.2)
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 #4D91C6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.028
- Cool Blue #4984B8 ΔE 0.039
- Dusty Blue #5A86AD ΔE 0.042
- Off Blue #5684AE ΔE 0.044
- Steel Blue #4682B4 ΔE 0.047
- Dark Sky Blue #448EE4 ΔE 0.049
- Water Blue #0E87CC ΔE 0.050
- Blue NCS #118AB2 ΔE 0.053
Use #4D91C6 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.