#3677FB
Closest named color: Clear Blue (#247AFD). oklch(60.3% 0.208 262.3), rgb(54, 119, 251).
Aa
Black text reads best on this color (5.18:1).
About this color
#3677FB is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.208 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.011 away. Black text reads best on it, at 5.18:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.208) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.18:1 |
| White text | 4.04:1 |
Values
| HEX | #3677FB |
| RGB | rgb(54, 119, 251) |
| HSL | hsl(220, 96%, 60%) |
| OKLCH | oklch(60.3% 0.208 262.3) |
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 #3677FB | 4.04:1 | AA large text | Lc -72.6 | Content text, not long reading |
| Black text on #3677FB | 5.18:1 | AA | Lc 36.9 | Non-text elements, placeholder text |
| #3677FB text on white | 4.04:1 | AA large text | Lc 67.1 | Content text, not long reading |
| #3677FB text on black | 5.18:1 | AA | Lc -34.5 | 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 500.
-
Step 50
50
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#DFEAFE
oklch(93.5% 0.03 262.5)
-
Step 200
200
#C5DAFF
oklch(88.5% 0.056 261.8)
-
Step 300
300
#9FC1FF
oklch(80.9% 0.096 262.2)
-
Step 400
400
#6B9EFF
oklch(70.7% 0.153 262.2)
-
Step 500
500 (this color)
#3677FB
oklch(60.3% 0.208 262.3)
-
Step 600
600
#1E65F5
oklch(55.7% 0.227 262.2)
-
Step 700
700
#1252D5
oklch(49.1% 0.211 262.4)
-
Step 800
800
#1244AC
oklch(42.6% 0.175 262.4)
-
Step 900
900
#163B88
oklch(37.6% 0.136 262.5)
-
Step 950
950
#0E2450
oklch(27.2% 0.086 262.3)
#3677FB 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) | #0788FF | 0.042 |
| Deuteranopia (no green cones) | #0076F8 | 0.023 |
| Tritanopia (no blue cones) | #0097AE | 0.161 |
| Achromatopsia (no color) | #7E7E7E | 0.209 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3677FB
#3677FB
oklch(60.3% 0.208 262.3)
- #A57800
#A57800
oklch(60.2% 0.124 82.2)
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 #3677FB, closest first.
No curated palette has a color within ΔE 0.04 of #3677FB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.011
- Cerulean Blue #056EEE ΔE 0.040
- Royal Blue #4169E1 ΔE 0.049
- Bright Blue #0165FC ΔE 0.053
- Neon Blue #4361EE ΔE 0.053
- Cornflower #6A79F7 ΔE 0.054
- Dodger Blue #1E90FF ΔE 0.061
- Azul #1D5DEC ΔE 0.071
Use #3677FB 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.