#043A4A
Closest named color: Midnight Green (#073B4C). oklch(32.4% 0.059 224), rgb(4, 58, 74).
Aa
White text reads best on this color (12.28:1).
About this color
#043A4A is a dark, muted teal or cyan. In OKLCH its lightness is 32%, its chroma 0.059 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.005 away. White text reads best on it, at 12.28:1.
| Hue family | Teals and cyans |
| Lightness | dark (32%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.70:1 |
| White text | 12.28:1 |
Values
| HEX | #043A4A |
| RGB | rgb(4, 58, 74) |
| HSL | hsl(194, 90%, 15%) |
| OKLCH | oklch(32.4% 0.059 224) |
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 #043A4A | 12.28:1 | AAA | Lc -101.2 | Preferred for body text |
| Black text on #043A4A | 1.70:1 | Fails | Lc 0.0 | Not readable |
| #043A4A text on white | 12.28:1 | AAA | Lc 97.6 | Preferred for body text |
| #043A4A text on black | 1.70:1 | Fails | Lc 0.0 | 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C9DDE5
oklch(88.5% 0.024 223.7)
-
Step 300
300
#A3C7D6
oklch(80.8% 0.044 225.1)
-
Step 400
400
#6FAAC1
oklch(70.6% 0.07 224.6)
-
Step 500
500
#4395B2
oklch(63.1% 0.09 224.3)
-
Step 600
600
#1A7F9D
oklch(55.6% 0.097 223.6)
-
Step 700
700
#066B87
oklch(49.1% 0.091 224.4)
-
Step 800
800
#0E576D
oklch(42.6% 0.075 224.1)
-
Step 900
900 (this color)
#043A4A
oklch(32.4% 0.059 224)
-
Step 950
950
#0F2A34
oklch(26.9% 0.038 225.1)
#043A4A 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) | #31384B | 0.046 |
| Deuteranopia (no green cones) | #28324A | 0.040 |
| Tritanopia (no blue cones) | #003F3F | 0.030 |
| Achromatopsia (no color) | #353535 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #043A4A
#043A4A
oklch(32.4% 0.059 224)
- #4D291A
#4D291A
oklch(32.4% 0.059 42.9)
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 #043A4A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.005
- Dark Blue Grey #1F3B4D ΔE 0.023
- Prussian Blue #1D3557 ΔE 0.037
- Gunmetal #293241 ΔE 0.040
- Onyx #343A40 ΔE 0.051
- Space Cadet #2B2D42 ΔE 0.052
- Charcoal #264653 ΔE 0.053
- Marine Blue #01386A ΔE 0.059
Use #043A4A 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.