#043340
Closest named color: Midnight Green (#073B4C). oklch(29.8% 0.052 221.8), rgb(4, 51, 64).
Aa
White text reads best on this color (13.52:1).
About this color
#043340 is a dark, muted teal or cyan. In OKLCH its lightness is 30%, its chroma 0.052 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.032 away. White text reads best on it, at 13.52:1.
| Hue family | Teals and cyans |
| Lightness | dark (30%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.55:1 |
| White text | 13.52:1 |
Values
| HEX | #043340 |
| RGB | rgb(4, 51, 64) |
| HSL | hsl(193, 88%, 13%) |
| OKLCH | oklch(29.8% 0.052 221.8) |
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 #043340 | 13.52:1 | AAA | Lc -102.9 | Preferred for body text |
| Black text on #043340 | 1.55:1 | Fails | Lc 0.0 | Not readable |
| #043340 text on white | 13.52:1 | AAA | Lc 99.7 | Preferred for body text |
| #043340 text on black | 1.55:1 | 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 950.
-
Step 50
50
#F0F7F9
oklch(97.1% 0.008 216.6)
-
Step 100
100
#DEEDF2
oklch(93.6% 0.017 219.7)
-
Step 200
200
#C1DFEA
oklch(88.5% 0.035 221.9)
-
Step 300
300
#94CADD
oklch(80.8% 0.062 221.7)
-
Step 400
400
#4FAECD
oklch(70.6% 0.1 222.4)
-
Step 500
500
#0098BB
oklch(63% 0.116 221.8)
-
Step 600
600
#00809E
oklch(55.6% 0.103 221.9)
-
Step 700
700
#006C85
oklch(49.2% 0.09 221.2)
-
Step 800
800
#00586E
oklch(42.7% 0.079 222.3)
-
Step 900
900
#00495C
oklch(37.6% 0.07 222.6)
-
Step 950
950 (this color)
#043340
oklch(29.8% 0.052 221.8)
#043340 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) | #2B3141 | 0.042 |
| Deuteranopia (no green cones) | #242C40 | 0.037 |
| Tritanopia (no blue cones) | #003737 | 0.025 |
| Achromatopsia (no color) | #2E2E2E | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #043340
#043340
oklch(29.8% 0.052 221.8)
- #432418
#432418
oklch(29.8% 0.052 41.7)
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 #043340, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.032
- Gunmetal #293241 ΔE 0.038
- Dark Blue Grey #1F3B4D ΔE 0.043
- Oxford Blue #1B263B ΔE 0.045
- Space Cadet #2B2D42 ΔE 0.046
- Prussian Blue #1D3557 ΔE 0.049
- Dark #1B2431 ΔE 0.053
- Jet #212529 ΔE 0.057
Use #043340 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.