#4D5BCA
Closest named color: Warm Blue (#4B57DB). oklch(52.2% 0.171 273.5), rgb(77, 91, 202).
Aa
White text reads best on this color (5.73:1).
About this color
#4D5BCA is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.171 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.028 away. White text reads best on it, at 5.73:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.171) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.66:1 |
| White text | 5.73:1 |
Values
| HEX | #4D5BCA |
| RGB | rgb(77, 91, 202) |
| HSL | hsl(233, 54%, 55%) |
| OKLCH | oklch(52.2% 0.171 273.5) |
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 #4D5BCA | 5.73:1 | AA | Lc -83.6 | Fine for body text |
| Black text on #4D5BCA | 3.66:1 | AA large text | Lc 25.8 | Dividers and decoration only |
| #4D5BCA text on white | 5.73:1 | AA | Lc 78.3 | Fine for body text |
| #4D5BCA text on black | 3.66:1 | AA large text | Lc -23.5 | Dividers and decoration only |
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 700.
-
Step 50
50
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FA
oklch(93.5% 0.024 272.8)
-
Step 200
200
#CFD8F8
oklch(88.5% 0.045 273)
-
Step 300
300
#AFBDF7
oklch(80.8% 0.084 273.9)
-
Step 400
400
#8699F3
oklch(70.6% 0.133 273.5)
-
Step 500
500
#6B7DEE
oklch(63.1% 0.169 273.7)
-
Step 600
600
#5463DD
oklch(55.5% 0.185 273.5)
-
Step 700
700 (this color)
#4D5BCA
oklch(52.2% 0.171 273.5)
-
Step 800
800
#39439B
oklch(42.7% 0.142 273.8)
-
Step 900
900
#303A7B
oklch(37.7% 0.11 273.4)
-
Step 950
950
#1C2248
oklch(26.9% 0.07 274)
#4D5BCA 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) | #016CCE | 0.059 |
| Deuteranopia (no green cones) | #0061C8 | 0.053 |
| Tritanopia (no blue cones) | #00758A | 0.144 |
| Achromatopsia (no color) | #666666 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4D5BCA
#4D5BCA
oklch(52.2% 0.171 273.5)
- #7E6700
#7E6700
oklch(52.1% 0.107 93.5)
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 #4D5BCA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.028
- Iris #6258C4 ΔE 0.031
- Dark Periwinkle #665FD1 ΔE 0.039
- Slate Blue #6A5ACD ΔE 0.042
- Light Indigo #6D5ACF ΔE 0.047
- Royal Blue #4169E1 ΔE 0.047
- Neon Blue #4361EE ΔE 0.057
- Bluey Purple #6241C7 ΔE 0.061
Use #4D5BCA 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.