#5372DD
Closest named color: Royal Blue (#4169E1). oklch(58.4% 0.167 268.7), rgb(83, 114, 221).
Aa
Black text reads best on this color (4.81:1).
About this color
#5372DD is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.167 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.033 away. Black text reads best on it, at 4.81:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.81:1 |
| White text | 4.35:1 |
Values
| HEX | #5372DD |
| RGB | rgb(83, 114, 221) |
| HSL | hsl(227, 67%, 60%) |
| OKLCH | oklch(58.4% 0.167 268.7) |
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 #5372DD | 4.35:1 | AA large text | Lc -75.4 | Fine for body text |
| Black text on #5372DD | 4.81:1 | AA | Lc 34.2 | Non-text elements, placeholder text |
| #5372DD text on white | 4.35:1 | AA large text | Lc 69.9 | Content text, not long reading |
| #5372DD text on black | 4.81:1 | AA | Lc -31.8 | 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 600.
-
Step 50
50
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E4EAF9
oklch(93.7% 0.021 268.4)
-
Step 200
200
#CED9F6
oklch(88.6% 0.042 269)
-
Step 300
300
#ACBFF2
oklch(80.8% 0.075 268.8)
-
Step 400
400
#819DEC
oklch(70.7% 0.12 268.4)
-
Step 500
500
#6382E5
oklch(63% 0.153 268.7)
-
Step 600
600 (this color)
#5372DD
oklch(58.4% 0.167 268.7)
-
Step 700
700
#3D57B7
oklch(49.1% 0.155 268.7)
-
Step 800
800
#324894
oklch(42.7% 0.128 268.4)
-
Step 900
900
#2C3D76
oklch(37.7% 0.099 268.8)
-
Step 950
950
#1A2445
oklch(27% 0.063 269.2)
#5372DD 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) | #3A7FE1 | 0.037 |
| Deuteranopia (no green cones) | #1C73DB | 0.043 |
| Tritanopia (no blue cones) | #008B9D | 0.142 |
| Achromatopsia (no color) | #797979 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5372DD
#5372DD
oklch(58.4% 0.167 268.7)
- #987600
#987600
oklch(58.3% 0.119 88.4)
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 #5372DD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.033
- Dark Periwinkle #665FD1 ΔE 0.051
- Cornflower #6A79F7 ΔE 0.052
- Neon Blue #4361EE ΔE 0.055
- Cerulean Blue #056EEE ΔE 0.058
- Clear Blue #247AFD ΔE 0.058
- Windows Blue #3778BF ΔE 0.059
- Medium Slate Blue #7B68EE ΔE 0.063
Use #5372DD 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.