#33647D
Closest named color: Denim (#3B638C). oklch(48% 0.067 232.7), rgb(51, 100, 125).
Aa
White text reads best on this color (6.44:1).
About this color
#33647D is a medium-dark, muted blue. In OKLCH its lightness is 48%, its chroma 0.067 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.028 away. White text reads best on it, at 6.44:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.25:1 |
| White text | 6.44:1 |
Values
| HEX | #33647D |
| RGB | rgb(51, 100, 125) |
| HSL | hsl(200, 42%, 35%) |
| OKLCH | oklch(48% 0.067 232.7) |
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 #33647D | 6.44:1 | AA | Lc -86.9 | Fine for body text |
| Black text on #33647D | 3.25:1 | AA large text | Lc 22.2 | Dividers and decoration only |
| #33647D text on white | 6.44:1 | AA | Lc 81.8 | Fine for body text |
| #33647D text on black | 3.25:1 | AA large text | Lc -20.1 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CEDBE3
oklch(88.4% 0.018 234.5)
-
Step 300
300
#ADC5D2
oklch(81% 0.032 231.4)
-
Step 400
400
#81A7BC
oklch(70.8% 0.052 232.6)
-
Step 500
500
#6091AB
oklch(63.2% 0.066 232.4)
-
Step 600
600
#457B96
oklch(55.7% 0.071 231.7)
-
Step 700
700 (this color)
#33647D
oklch(48% 0.067 232.7)
-
Step 800
800
#2E5468
oklch(42.6% 0.055 233)
-
Step 900
900
#294655
oklch(37.8% 0.043 232.1)
-
Step 950
950
#192932
oklch(27.1% 0.027 233.8)
#33647D 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) | #58637E | 0.044 |
| Deuteranopia (no green cones) | #4D5B7D | 0.038 |
| Tritanopia (no blue cones) | #006B6C | 0.049 |
| Achromatopsia (no color) | #5E5E5E | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33647D
#33647D
oklch(48% 0.067 232.7)
- #7B5339
#7B5339
oklch(48% 0.066 53.5)
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 #33647D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.028
- YInMn Blue #415A77 ΔE 0.031
- Slate #516572 ΔE 0.038
- Light Navy Blue #2E5A88 ΔE 0.040
- Peacock Blue #016795 ΔE 0.042
- Dark Aqua #05696B ΔE 0.047
- Petrol #005F6A ΔE 0.047
- Denim Blue #3B5B92 ΔE 0.050
Use #33647D 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.