#3992EB
Closest named color: Dark Sky Blue (#448EE4). oklch(65% 0.157 251.6), rgb(57, 146, 235).
Aa
Black text reads best on this color (6.48:1).
About this color
#3992EB is a medium-light, vivid blue. In OKLCH its lightness is 65%, its chroma 0.157 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.014 away. Black text reads best on it, at 6.48:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.157) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.48:1 |
| White text | 3.23:1 |
Values
| HEX | #3992EB |
| RGB | rgb(57, 146, 235) |
| HSL | hsl(210, 82%, 57%) |
| OKLCH | oklch(65% 0.157 251.6) |
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 #3992EB | 3.23:1 | AA large text | Lc -64.7 | Content text, not long reading |
| Black text on #3992EB | 6.48:1 | AA | Lc 44.8 | Non-text elements, placeholder text |
| #3992EB text on white | 3.23:1 | AA large text | Lc 59.3 | Large or bold text, headings |
| #3992EB text on black | 6.48:1 | AA | Lc -42.5 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#DFEBF9
oklch(93.5% 0.023 252.2)
-
Step 200
200
#C5DCF5
oklch(88.5% 0.042 250.5)
-
Step 300
300
#9CC5F1
oklch(81% 0.076 250.6)
-
Step 400
400
#64A5EB
oklch(70.8% 0.123 251.6)
-
Step 500
500 (this color)
#3992EB
oklch(65% 0.157 251.6)
-
Step 600
600
#0074CF
oklch(55.5% 0.165 251.7)
-
Step 700
700
#0062AF
oklch(49.2% 0.144 251.3)
-
Step 800
800
#005091
oklch(42.8% 0.126 251.5)
-
Step 900
900
#0B4376
oklch(37.8% 0.103 251.4)
-
Step 950
950
#0A2745
oklch(26.9% 0.066 252.2)
#3992EB 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) | #6898EF | 0.046 |
| Deuteranopia (no green cones) | #4C87E9 | 0.030 |
| Tritanopia (no blue cones) | #00A7B3 | 0.118 |
| Achromatopsia (no color) | #8F8F8F | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3992EB
#3992EB
oklch(65% 0.157 251.6)
- #C37E00
#C37E00
oklch(65% 0.14 71.3)
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 #3992EB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.014
- Chefchaouen Blue #4895EF ΔE 0.016
- Dodger Blue #1E90FF ΔE 0.033
- Cornflower Blue #6495ED ΔE 0.039
- Soft Blue #6488EA ΔE 0.042
- Water Blue #0E87CC ΔE 0.059
- Clear Blue #247AFD ΔE 0.074
- Faded Blue #658CBB ΔE 0.076
Use #3992EB 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.