#3D5FBF
Closest named color: Mid Blue (#276AB3). oklch(51.3% 0.156 266.3), rgb(61, 95, 191).
Aa
White text reads best on this color (5.85:1).
About this color
#3D5FBF is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.156 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.040 away. White text reads best on it, at 5.85:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.156) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.58:1 |
| White text | 5.85:1 |
Values
| HEX | #3D5FBF |
| RGB | rgb(61, 95, 191) |
| HSL | hsl(224, 52%, 49%) |
| OKLCH | oklch(51.3% 0.156 266.3) |
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 #3D5FBF | 5.85:1 | AA | Lc -84.2 | Fine for body text |
| Black text on #3D5FBF | 3.58:1 | AA large text | Lc 25.1 | Dividers and decoration only |
| #3D5FBF text on white | 5.85:1 | AA | Lc 78.9 | Fine for body text |
| #3D5FBF text on black | 3.58:1 | AA large text | Lc -22.9 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CCD9F6
oklch(88.5% 0.042 266.3)
-
Step 300
300
#AAC0F2
oklch(80.9% 0.075 266.2)
-
Step 400
400
#7E9EEC
oklch(70.8% 0.12 266.4)
-
Step 500
500
#5E84E6
oklch(63.2% 0.153 266.2)
-
Step 600
600
#456BD4
oklch(55.6% 0.167 266.1)
-
Step 700
700 (this color)
#3D5FBF
oklch(51.3% 0.156 266.3)
-
Step 800
800
#2E4995
oklch(42.8% 0.129 266.3)
-
Step 900
900
#293E76
oklch(37.8% 0.099 266.3)
-
Step 950
950
#182545
oklch(27.1% 0.062 265.8)
#3D5FBF 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) | #286BC2 | 0.033 |
| Deuteranopia (no green cones) | #005FBD | 0.037 |
| Tritanopia (no blue cones) | #007686 | 0.128 |
| Achromatopsia (no color) | #656565 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D5FBF
#3D5FBF
oklch(51.3% 0.156 266.3)
- #816200
#816200
oklch(51.3% 0.105 86.9)
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 #3D5FBF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.040
- French Blue #436BAD ΔE 0.048
- Iris #6258C4 ΔE 0.050
- Warm Blue #4B57DB ΔE 0.051
- Royal Blue #4169E1 ΔE 0.057
- Dark Periwinkle #665FD1 ΔE 0.061
- Slate Blue #6A5ACD ΔE 0.064
- Windows Blue #3778BF ΔE 0.067
Use #3D5FBF 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.