#033D94
Closest named color: Cobalt (#1E488F). oklch(38.7% 0.153 260), rgb(3, 61, 148).
Aa
White text reads best on this color (10.00:1).
About this color
#033D94 is a dark, vivid blue. In OKLCH its lightness is 39%, its chroma 0.153 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.038 away. White text reads best on it, at 10.00:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | vivid (0.153) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.09:1 |
| White text | 10.00:1 |
Values
| HEX | #033D94 |
| RGB | rgb(3, 61, 148) |
| HSL | hsl(216, 96%, 30%) |
| OKLCH | oklch(38.7% 0.153 260) |
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 #033D94 | 10.00:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #033D94 | 2.09:1 | Fails | Lc 11.5 | Not readable |
| #033D94 text on white | 10.00:1 | AAA | Lc 92.4 | Preferred for body text |
| #033D94 text on black | 2.09:1 | Fails | Lc -10.0 | 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 900.
-
Step 50
50
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DEEBFF
oklch(93.6% 0.031 258.9)
-
Step 200
200
#C4DBFF
oklch(88.6% 0.056 259.3)
-
Step 300
300
#9CC2FF
oklch(80.9% 0.096 259.7)
-
Step 400
400
#659FFF
oklch(70.6% 0.154 260)
-
Step 500
500
#3883FF
oklch(63% 0.199 260)
-
Step 600
600
#0067F4
oklch(55.6% 0.226 260)
-
Step 700
700
#0056CF
oklch(49.1% 0.2 260)
-
Step 800
800
#0046AB
oklch(42.6% 0.173 259.9)
-
Step 900
900 (this color)
#033D94
oklch(38.7% 0.153 260)
-
Step 950
950
#052355
oklch(27% 0.098 260.1)
#033D94 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) | #004997 | 0.032 |
| Deuteranopia (no green cones) | #003C92 | 0.005 |
| Tritanopia (no blue cones) | #005362 | 0.116 |
| Achromatopsia (no color) | #424242 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #033D94
#033D94
oklch(38.7% 0.153 260)
- #5A3E00
#5A3E00
oklch(38.6% 0.08 79.8)
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 #033D94, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.038
- Sapphire #2138AB ΔE 0.043
- Twilight Blue #0A437A ΔE 0.048
- Light Navy #155084 ΔE 0.065
- Blueberry #464196 ΔE 0.071
- Dusk Blue #26538D ΔE 0.071
- Marine Blue #01386A ΔE 0.072
- Dark Slate Blue #483D8B ΔE 0.074
Use #033D94 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.