#372DFD
Closest named color: Light Royal Blue (#3A2EFE). oklch(49.1% 0.284 271), rgb(55, 45, 253).
Aa
White text reads best on this color (7.10:1).
About this color
#372DFD is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.284 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Light Royal Blue (#3A2EFE), ΔE 0.005 away. White text reads best on it, at 7.10:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.284) |
| Temperature | cool |
| Nearest name | Light Royal Blue (#3A2EFE) |
| Black text | 2.95:1 |
| White text | 7.10:1 |
Values
| HEX | #372DFD |
| RGB | rgb(55, 45, 253) |
| HSL | hsl(243, 98%, 58%) |
| OKLCH | oklch(49.1% 0.284 271) |
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 #372DFD | 7.10:1 | AAA | Lc -87.9 | Fine for body text |
| Black text on #372DFD | 2.95:1 | Fails | Lc 21.1 | Dividers and decoration only |
| #372DFD text on white | 7.10:1 | AAA | Lc 82.9 | Fine for body text |
| #372DFD text on black | 2.95:1 | Fails | Lc -19.0 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2E9FF
oklch(93.5% 0.031 271.7)
-
Step 200
200
#CBD8FF
oklch(88.5% 0.056 270.7)
-
Step 300
300
#AABEFF
oklch(81% 0.095 271)
-
Step 400
400
#7E99FF
oklch(70.7% 0.152 270.9)
-
Step 500
500
#607BFF
oklch(63.2% 0.197 271)
-
Step 600
600
#4658FF
oklch(55.6% 0.245 271)
-
Step 700
700 (this color)
#372DFD
oklch(49.1% 0.284 271)
-
Step 800
800
#2C2ACC
oklch(42.7% 0.235 271)
-
Step 900
900
#242CA0
oklch(37.7% 0.183 270.8)
-
Step 950
950
#141C5E
oklch(27% 0.116 270.8)
#372DFD 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) | #0062FF | 0.088 |
| Deuteranopia (no green cones) | #004DFA | 0.050 |
| Tritanopia (no blue cones) | #007199 | 0.214 |
| Achromatopsia (no color) | #585858 | 0.286 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #372DFD
#372DFD
oklch(49.1% 0.284 271)
- #765E00
#765E00
oklch(49.2% 0.101 91.4)
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 #372DFD, closest first.
No curated palette has a color within ΔE 0.04 of #372DFD.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Royal Blue #3A2EFE ΔE 0.005
- Vivid Blue #152EFF ΔE 0.030
- Vibrant Blue #0339F8 ΔE 0.035
- Rich Blue #021BF9 ΔE 0.051
- Electric Blue #0652FF ΔE 0.057
- Strong Blue #0C06F7 ΔE 0.059
- Primary Blue #0804F9 ΔE 0.059
- Blue #0000FF ΔE 0.061
Use #372DFD 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.