#04405F
Closest named color: Dark Blue Grey (#1F3B4D). oklch(35.4% 0.077 239), rgb(4, 64, 95).
Aa
White text reads best on this color (11.03:1).
About this color
#04405F is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.077 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.034 away. White text reads best on it, at 11.03:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.90:1 |
| White text | 11.03:1 |
Values
| HEX | #04405F |
| RGB | rgb(4, 64, 95) |
| HSL | hsl(200, 92%, 19%) |
| OKLCH | oklch(35.4% 0.077 239) |
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 #04405F | 11.03:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #04405F | 1.90:1 | Fails | Lc 8.8 | Not readable |
| #04405F text on white | 11.03:1 | AAA | Lc 95.1 | Preferred for body text |
| #04405F text on black | 1.90:1 | Fails | Lc -7.6 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF4
oklch(93.6% 0.017 236.7)
-
Step 200
200
#C7DDEC
oklch(88.6% 0.031 237.6)
-
Step 300
300
#9FC7E2
oklch(81% 0.057 237.9)
-
Step 400
400
#67A9D4
oklch(70.7% 0.092 238.5)
-
Step 500
500
#3692C9
oklch(63% 0.119 239.2)
-
Step 600
600
#007BB4
oklch(55.5% 0.126 239.3)
-
Step 700
700
#006898
oklch(49.2% 0.11 238.7)
-
Step 800
800
#00557D
oklch(42.7% 0.096 238.5)
-
Step 900
900 (this color)
#04405F
oklch(35.4% 0.077 239)
-
Step 950
950
#0B293C
oklch(26.9% 0.05 240.3)
#04405F 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) | #314060 | 0.040 |
| Deuteranopia (no green cones) | #25395E | 0.031 |
| Tritanopia (no blue cones) | #00484B | 0.050 |
| Achromatopsia (no color) | #3C3C3C | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04405F
#04405F
oklch(35.4% 0.077 239)
- #583008
#583008
oklch(35.3% 0.077 59.5)
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 #04405F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.034
- Midnight Green #073B4C ΔE 0.034
- Marine Blue #01386A ΔE 0.035
- Prussian Blue #1D3557 ΔE 0.036
- Dark Grey Blue #29465B ΔE 0.038
- Charcoal #264653 ΔE 0.042
- Twilight Blue #0A437A ΔE 0.047
- Marine #042E60 ΔE 0.058
Use #04405F 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.