#3A91FD
Closest named color: Dodger Blue (#1E90FF). oklch(65.9% 0.181 255.8), rgb(58, 145, 253).
Aa
Black text reads best on this color (6.64:1).
About this color
#3A91FD is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.181 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Dodger Blue (#1E90FF), ΔE 0.014 away. Black text reads best on it, at 6.64:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.181) |
| Temperature | cool |
| Nearest name | Dodger Blue (#1E90FF) |
| Black text | 6.64:1 |
| White text | 3.15:1 |
Values
| HEX | #3A91FD |
| RGB | rgb(58, 145, 253) |
| HSL | hsl(213, 98%, 61%) |
| OKLCH | oklch(65.9% 0.181 255.8) |
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 #3A91FD | 3.15:1 | AA large text | Lc -63.6 | Content text, not long reading |
| Black text on #3A91FD | 6.64:1 | AA | Lc 45.8 | Large or bold text, headings |
| #3A91FD text on white | 3.15:1 | AA large text | Lc 58.2 | Large or bold text, headings |
| #3A91FD text on black | 6.64:1 | AA | Lc -43.5 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFB
oklch(93.6% 0.025 255.6)
-
Step 200
200
#C4DBFA
oklch(88.4% 0.05 255.9)
-
Step 300
300
#9BC3F9
oklch(80.8% 0.088 256.1)
-
Step 400
400
#62A2F7
oklch(70.7% 0.142 256.1)
-
Step 500
500 (this color)
#3A91FD
oklch(65.9% 0.181 255.8)
-
Step 600
600
#0070DE
oklch(55.7% 0.188 255.7)
-
Step 700
700
#005EBC
oklch(49.2% 0.166 255.7)
-
Step 800
800
#004C9B
oklch(42.6% 0.144 255.8)
-
Step 900
900
#0A407E
oklch(37.7% 0.118 255.8)
-
Step 950
950
#09264A
oklch(27% 0.075 255.8)
#3A91FD 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) | #5A9AFF | 0.038 |
| Deuteranopia (no green cones) | #3589FB | 0.022 |
| Tritanopia (no blue cones) | #00ABBB | 0.138 |
| Achromatopsia (no color) | #919191 | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A91FD
#3A91FD
oklch(65.9% 0.181 255.8)
- #C28400
#C28400
oklch(66% 0.139 75.8)
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 #3A91FD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dodger Blue #1E90FF ΔE 0.014
- Chefchaouen Blue #4895EF ΔE 0.027
- Dark Sky Blue #448EE4 ΔE 0.037
- Soft Blue #6488EA ΔE 0.045
- Cornflower Blue #6495ED ΔE 0.045
- Clear Blue #247AFD ΔE 0.063
- Cornflower #6A79F7 ΔE 0.068
- Water Blue #0E87CC ΔE 0.081
Use #3A91FD 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.