#33499A
Closest named color: Cobalt (#1E488F). oklch(43.4% 0.135 268.8), rgb(51, 73, 154).
Aa
White text reads best on this color (8.20:1).
About this color
#33499A is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.135 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.029 away. White text reads best on it, at 8.20:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.56:1 |
| White text | 8.20:1 |
Values
| HEX | #33499A |
| RGB | rgb(51, 73, 154) |
| HSL | hsl(227, 50%, 40%) |
| OKLCH | oklch(43.4% 0.135 268.8) |
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 #33499A | 8.20:1 | AAA | Lc -92.7 | Preferred for body text |
| Black text on #33499A | 2.56:1 | Fails | Lc 16.0 | Dividers and decoration only |
| #33499A text on white | 8.20:1 | AAA | Lc 88.0 | Fine for body text |
| #33499A text on black | 2.56:1 | Fails | Lc -14.1 | Not readable |
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 800.
-
Step 50
50
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFA
oklch(93.6% 0.023 266.9)
-
Step 200
200
#CDD9F7
oklch(88.6% 0.043 268.2)
-
Step 300
300
#ABBFF4
oklch(80.8% 0.078 268.5)
-
Step 400
400
#809CEF
oklch(70.6% 0.126 268.9)
-
Step 500
500
#6281EA
oklch(63.1% 0.161 269)
-
Step 600
600
#4A68D8
oklch(55.6% 0.175 268.8)
-
Step 700
700
#3C56BB
oklch(49.1% 0.162 268.8)
-
Step 800
800 (this color)
#33499A
oklch(43.4% 0.135 268.8)
-
Step 900
900
#2B3C79
oklch(37.7% 0.106 269.1)
-
Step 950
950
#192447
oklch(27.1% 0.067 268.5)
#33499A 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) | #18549D | 0.034 |
| Deuteranopia (no green cones) | #004A98 | 0.036 |
| Tritanopia (no blue cones) | #005C6A | 0.112 |
| Achromatopsia (no color) | #4F4F4F | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33499A
#33499A
oklch(43.4% 0.135 268.8)
- #654E00
#654E00
oklch(43.6% 0.089 89.1)
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 #33499A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.029
- Blueberry #464196 ΔE 0.031
- Dusk Blue #26538D ΔE 0.039
- Dark Slate Blue #483D8B ΔE 0.045
- Light Navy #155084 ΔE 0.051
- Twilight #4E518B ΔE 0.053
- Denim Blue #3B5B92 ΔE 0.056
- Sapphire #2138AB ΔE 0.057
Use #33499A 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.