#33648B
Closest named color: Denim (#3B638C). oklch(48.7% 0.082 244.7), rgb(51, 100, 139).
Aa
White text reads best on this color (6.29:1).
About this color
#33648B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.082 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.009 away. White text reads best on it, at 6.29:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.33:1 |
| White text | 6.29:1 |
Values
| HEX | #33648B |
| RGB | rgb(51, 100, 139) |
| HSL | hsl(207, 46%, 37%) |
| OKLCH | oklch(48.7% 0.082 244.7) |
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 #33648B | 6.29:1 | AA | Lc -86.3 | Fine for body text |
| Black text on #33648B | 3.33:1 | AA large text | Lc 22.9 | Dividers and decoration only |
| #33648B text on white | 6.29:1 | AA | Lc 81.2 | Fine for body text |
| #33648B text on black | 3.33:1 | AA large text | Lc -20.7 | 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
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CDDBE7
oklch(88.4% 0.022 243.8)
-
Step 300
300
#ACC4D9
oklch(80.9% 0.04 244.7)
-
Step 400
400
#7FA5C6
oklch(70.6% 0.064 245.1)
-
Step 500
500
#5E8FB8
oklch(63.2% 0.082 244.8)
-
Step 600
600
#4378A4
oklch(55.5% 0.089 245.4)
-
Step 700
700 (this color)
#33648B
oklch(48.7% 0.082 244.7)
-
Step 800
800
#2C5372
oklch(42.8% 0.068 244.4)
-
Step 900
900
#28455C
oklch(37.8% 0.053 243.8)
-
Step 950
950
#182836
oklch(27% 0.034 245.9)
#33648B 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) | #53658D | 0.038 |
| Deuteranopia (no green cones) | #475C8A | 0.030 |
| Tritanopia (no blue cones) | #006D72 | 0.062 |
| Achromatopsia (no color) | #606060 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33648B
#33648B
oklch(48.7% 0.082 244.7)
- #805528
#805528
oklch(48.7% 0.083 64.8)
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 #33648B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.009
- Peacock Blue #016795 ΔE 0.028
- Light Navy Blue #2E5A88 ΔE 0.031
- Dusky Blue #475F94 ΔE 0.031
- Denim Blue #3B5B92 ΔE 0.032
- YInMn Blue #415A77 ΔE 0.039
- Ocean Blue #03719C ΔE 0.043
- Muted Blue #3B719F ΔE 0.047
Use #33648B 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.