#00435B
Closest named color: Midnight Green (#073B4C). oklch(35.9% 0.072 230.3), rgb(0, 67, 91).
Aa
White text reads best on this color (10.74:1).
About this color
#00435B is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.072 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.033 away. White text reads best on it, at 10.74:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.95:1 |
| White text | 10.74:1 |
Values
| HEX | #00435B |
| RGB | rgb(0, 67, 91) |
| HSL | hsl(196, 100%, 18%) |
| OKLCH | oklch(35.9% 0.072 230.3) |
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 #00435B | 10.74:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #00435B | 1.95:1 | Fails | Lc 9.5 | Not readable |
| #00435B text on white | 10.74:1 | AAA | Lc 94.4 | Preferred for body text |
| #00435B 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
#C6DDE9
oklch(88.4% 0.03 230.3)
-
Step 300
300
#9EC8DD
oklch(81% 0.053 229.8)
-
Step 400
400
#65ABCC
oklch(70.8% 0.086 230)
-
Step 500
500
#3095BF
oklch(63.1% 0.11 230.3)
-
Step 600
600
#007EA8
oklch(55.6% 0.112 230.6)
-
Step 700
700
#006A8D
oklch(49.1% 0.098 229.8)
-
Step 800
800
#005775
oklch(42.8% 0.086 230.3)
-
Step 900
900 (this color)
#00435B
oklch(35.9% 0.072 230.3)
-
Step 950
950
#092A38
oklch(26.9% 0.045 230.2)
#00435B 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 | 0.049 |
| Deuteranopia (no green cones) | #2B3A5B | 0.041 |
| Tritanopia (no blue cones) | #004A4B | 0.042 |
| Achromatopsia (no color) | #3E3E3E | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00435B
#00435B
oklch(35.9% 0.072 230.3)
- #5A3017
#5A3017
oklch(35.8% 0.072 49.6)
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 #00435B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.033
- Charcoal #264653 ΔE 0.033
- Dark Grey Blue #29465B ΔE 0.033
- Dark Blue Grey #1F3B4D 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 #00435B 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.