#1F36FD
Closest named color: Vivid Blue (#152EFF). oklch(49.1% 0.283 266.5), rgb(31, 54, 253).
Aa
White text reads best on this color (6.98:1).
About this color
#1F36FD is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.283 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Blue (#152EFF), ΔE 0.014 away. White text reads best on it, at 6.98:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.283) |
| Temperature | cool |
| Nearest name | Vivid Blue (#152EFF) |
| Black text | 3.00:1 |
| White text | 6.98:1 |
Values
| HEX | #1F36FD |
| RGB | rgb(31, 54, 253) |
| HSL | hsl(234, 98%, 56%) |
| OKLCH | oklch(49.1% 0.283 266.5) |
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 #1F36FD | 6.98:1 | AA | Lc -87.6 | Fine for body text |
| Black text on #1F36FD | 3.00:1 | AA large text | Lc 21.5 | Dividers and decoration only |
| #1F36FD text on white | 6.98:1 | AA | Lc 82.5 | Fine for body text |
| #1F36FD text on black | 3.00:1 | AA large text | Lc -19.4 | 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
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C8D9FF
oklch(88.5% 0.056 266.2)
-
Step 300
300
#A4BFFF
oklch(80.8% 0.096 266.6)
-
Step 400
400
#759BFF
oklch(70.6% 0.153 266.8)
-
Step 500
500
#527EFF
oklch(63% 0.198 266.5)
-
Step 600
600
#335DFF
oklch(55.7% 0.244 266.6)
-
Step 700
700 (this color)
#1F36FD
oklch(49.1% 0.283 266.5)
-
Step 800
800
#1930CC
oklch(42.7% 0.235 266.6)
-
Step 900
900
#172FA0
oklch(37.6% 0.183 266.7)
-
Step 950
950
#0D1E5E
oklch(27.1% 0.116 266.6)
#1F36FD 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) | #0064FF | 0.083 |
| Deuteranopia (no green cones) | #004EFA | 0.037 |
| Tritanopia (no blue cones) | #00759A | 0.213 |
| Achromatopsia (no color) | #595959 | 0.284 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F36FD
#1F36FD
oklch(49.1% 0.283 266.5)
- #7A5C00
#7A5C00
oklch(49.2% 0.101 86.4)
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 #1F36FD, closest first.
No curated palette has a color within ΔE 0.04 of #1F36FD.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Blue #152EFF ΔE 0.014
- Vibrant Blue #0339F8 ΔE 0.014
- Light Royal Blue #3A2EFE ΔE 0.025
- Rich Blue #021BF9 ΔE 0.040
- Electric Blue #0652FF ΔE 0.046
- Strong Blue #0C06F7 ΔE 0.051
- Blue #0000FF ΔE 0.051
- Primary Blue #0804F9 ΔE 0.051
Use #1F36FD 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.