#04435B
Closest named color: Dark Grey Blue (#29465B). oklch(35.9% 0.07 231), rgb(4, 67, 91).
Aa
White text reads best on this color (10.71:1).
About this color
#04435B is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.070 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.031 away. White text reads best on it, at 10.71:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.95:1 |
| White text | 10.71:1 |
Values
| HEX | #04435B |
| RGB | rgb(4, 67, 91) |
| HSL | hsl(197, 92%, 19%) |
| OKLCH | oklch(35.9% 0.07 231) |
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 #04435B | 10.71:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #04435B | 1.95:1 | Fails | Lc 9.5 | Not readable |
| #04435B text on white | 10.71:1 | AAA | Lc 94.4 | Preferred for body text |
| #04435B text on black | 1.95:1 | Fails | Lc -8.2 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E0ECF2
oklch(93.6% 0.015 229)
-
Step 200
200
#C7DDE9
oklch(88.5% 0.029 231.5)
-
Step 300
300
#9FC7DD
oklch(80.8% 0.053 232.3)
-
Step 400
400
#67AACC
oklch(70.6% 0.084 231.8)
-
Step 500
500
#3495BF
oklch(63.2% 0.108 230.9)
-
Step 600
600
#007EA9
oklch(55.6% 0.112 231.2)
-
Step 700
700
#006A8E
oklch(49.1% 0.099 230.6)
-
Step 800
800
#005775
oklch(42.8% 0.086 230.3)
-
Step 900
900 (this color)
#04435B
oklch(35.9% 0.07 231)
-
Step 950
950
#0B2A38
oklch(27% 0.044 231.3)
#04435B 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) | #37425C | 0.047 |
| Deuteranopia (no green cones) | #2C3B5B | 0.039 |
| Tritanopia (no blue cones) | #004A4B | 0.042 |
| Achromatopsia (no color) | #3E3E3E | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04435B
#04435B
oklch(35.9% 0.07 231)
- #5A3117
#5A3117
oklch(36% 0.071 51.1)
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 #04435B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.031
- Charcoal #264653 ΔE 0.031
- Dark Blue Grey #1F3B4D ΔE 0.032
- Midnight Green #073B4C ΔE 0.033
- Prussian Blue #1D3557 ΔE 0.045
- Dark Teal #014D4E ΔE 0.046
- Marine Blue #01386A ΔE 0.048
- Twilight Blue #0A437A ΔE 0.055
Use #04435B 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.