#1F45EA
Closest named color: Vibrant Blue (#0339F8). oklch(49.1% 0.248 265.9), rgb(31, 69, 234).
Aa
White text reads best on this color (6.77:1).
About this color
#1F45EA is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.248 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Vibrant Blue (#0339F8), ΔE 0.032 away. White text reads best on it, at 6.77:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.248) |
| Temperature | cool |
| Nearest name | Vibrant Blue (#0339F8) |
| Black text | 3.09:1 |
| White text | 6.77:1 |
Values
| HEX | #1F45EA |
| RGB | rgb(31, 69, 234) |
| HSL | hsl(229, 83%, 52%) |
| OKLCH | oklch(49.1% 0.248 265.9) |
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 #1F45EA | 6.77:1 | AA | Lc -87.3 | Fine for body text |
| Black text on #1F45EA | 3.09:1 | AA large text | Lc 21.8 | Dividers and decoration only |
| #1F45EA text on white | 6.77:1 | AA | Lc 82.2 | Fine for body text |
| #1F45EA text on black | 3.09:1 | AA large text | Lc -19.7 | 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
#A4C0FF
oklch(81% 0.095 265.8)
-
Step 400
400
#739CFF
oklch(70.7% 0.152 265.7)
-
Step 500
500
#507FFF
oklch(63.1% 0.197 265.8)
-
Step 600
600
#2F5DFF
oklch(55.5% 0.245 265.9)
-
Step 700
700 (this color)
#1F45EA
oklch(49.1% 0.248 265.9)
-
Step 800
800
#1A3BBD
oklch(42.8% 0.205 265.9)
-
Step 900
900
#193595
oklch(37.7% 0.161 266)
-
Step 950
950
#0F2157
oklch(27.1% 0.101 265.8)
#1F45EA 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) | #0065EF | 0.067 |
| Deuteranopia (no green cones) | #0051E7 | 0.023 |
| Tritanopia (no blue cones) | #007493 | 0.188 |
| Achromatopsia (no color) | #5B5B5B | 0.249 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F45EA
#1F45EA
oklch(49.1% 0.248 265.9)
- #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 #1F45EA, closest first.
No curated palette has a color within ΔE 0.04 of #1F45EA.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vibrant Blue #0339F8 ΔE 0.032
- Electric Blue #0652FF ΔE 0.042
- Light Royal Blue #3A2EFE ΔE 0.044
- Vivid Blue #152EFF ΔE 0.045
- Azul #1D5DEC ΔE 0.050
- Blue Blue #2242C7 ΔE 0.056
- Rich Blue #021BF9 ΔE 0.063
- Majorelle Blue #3F37C9 ΔE 0.065
Use #1F45EA 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.