#3A6998
Closest named color: Denim (#3B638C). oklch(50.9% 0.091 250), rgb(58, 105, 152).
Aa
White text reads best on this color (5.74:1).
About this color
#3A6998 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.091 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.023 away. White text reads best on it, at 5.74:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.65:1 |
| White text | 5.74:1 |
Values
| HEX | #3A6998 |
| RGB | rgb(58, 105, 152) |
| HSL | hsl(210, 45%, 41%) |
| OKLCH | oklch(50.9% 0.091 250) |
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 #3A6998 | 5.74:1 | AA | Lc -83.8 | Fine for body text |
| Black text on #3A6998 | 3.65:1 | AA large text | Lc 25.5 | Dividers and decoration only |
| #3A6998 text on white | 5.74:1 | AA | Lc 78.6 | Fine for body text |
| #3A6998 text on black | 3.65:1 | AA large text | Lc -23.2 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CDDBE9
oklch(88.5% 0.025 248.1)
-
Step 300
300
#ACC3DD
oklch(80.8% 0.045 251.6)
-
Step 400
400
#7FA4CC
oklch(70.6% 0.072 250.8)
-
Step 500
500
#5E8DBE
oklch(63% 0.09 250.4)
-
Step 600
600
#4377AB
oklch(55.6% 0.099 250)
-
Step 700
700 (this color)
#3A6998
oklch(50.9% 0.091 250)
-
Step 800
800
#2C5277
oklch(42.8% 0.076 249.4)
-
Step 900
900
#284460
oklch(37.8% 0.059 249.6)
-
Step 950
950
#182838
oklch(27.1% 0.037 249.3)
#3A6998 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) | #556B9A | 0.033 |
| Deuteranopia (no green cones) | #486297 | 0.023 |
| Tritanopia (no blue cones) | #00747A | 0.074 |
| Achromatopsia (no color) | #666666 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A6998
#3A6998
oklch(50.9% 0.091 250)
- #875C23
#875C23
oklch(51% 0.091 70.4)
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 #3A6998, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.023
- Muted Blue #3B719F ΔE 0.024
- Dusky Blue #475F94 ΔE 0.030
- Ocean Blue #03719C ΔE 0.033
- Peacock Blue #016795 ΔE 0.034
- Flat Blue #3C73A8 ΔE 0.035
- French Blue #436BAD ΔE 0.035
- Denim Blue #3B5B92 ΔE 0.040
Use #3A6998 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.