#33749E
Closest named color: Muted Blue (#3B719F). oklch(53.6% 0.093 240.1), rgb(51, 116, 158).
Aa
White text reads best on this color (5.08:1).
About this color
#33749E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.093 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.011 away. White text reads best on it, at 5.08:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 4.13:1 |
| White text | 5.08:1 |
Values
| HEX | #33749E |
| RGB | rgb(51, 116, 158) |
| HSL | hsl(204, 51%, 41%) |
| OKLCH | oklch(53.6% 0.093 240.1) |
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 #33749E | 5.08:1 | AA | Lc -80.2 | Fine for body text |
| Black text on #33749E | 4.13:1 | AA large text | Lc 29.2 | Dividers and decoration only |
| #33749E text on white | 5.08:1 | AA | Lc 74.8 | Content text, not long reading |
| #33749E text on black | 4.13:1 | AA large text | Lc -26.9 | 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 600.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CCDCE7
oklch(88.6% 0.023 237.7)
-
Step 300
300
#A9C5D9
oklch(80.9% 0.041 239.1)
-
Step 400
400
#7AA7C7
oklch(70.8% 0.067 239.9)
-
Step 500
500
#5690B8
oklch(63% 0.086 240.2)
-
Step 600
600 (this color)
#33749E
oklch(53.6% 0.093 240.1)
-
Step 700
700
#2B678D
oklch(49.2% 0.087 239.7)
-
Step 800
800
#255472
oklch(42.7% 0.071 239.5)
-
Step 900
900
#23455C
oklch(37.6% 0.056 240.1)
-
Step 950
950
#152936
oklch(27% 0.036 238.5)
#33749E 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) | #6174A0 | 0.050 |
| Deuteranopia (no green cones) | #526A9D | 0.039 |
| Tritanopia (no blue cones) | #007F82 | 0.067 |
| Achromatopsia (no color) | #6E6E6E | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33749E
#33749E
oklch(53.6% 0.093 240.1)
- #955F30
#955F30
oklch(53.5% 0.094 59.6)
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 #33749E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.011
- Flat Blue #3C73A8 ΔE 0.019
- Dull Blue #49759C ΔE 0.021
- Ocean Blue #03719C ΔE 0.026
- Sea Blue #047495 ΔE 0.028
- Cerulean #457B9D ΔE 0.029
- Nice Blue #107AB0 ΔE 0.031
- Metallic Blue #4F738E ΔE 0.034
Use #33749E 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.