#10343A
Closest named color: Midnight Green (#073B4C). oklch(30.2% 0.042 210.3), rgb(16, 52, 58).
Aa
White text reads best on this color (13.33:1).
About this color
#10343A is a dark, muted teal or cyan. In OKLCH its lightness is 30%, its chroma 0.042 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.035 away. White text reads best on it, at 13.33:1.
| Hue family | Teals and cyans |
| Lightness | dark (30%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.57:1 |
| White text | 13.33:1 |
Values
| HEX | #10343A |
| RGB | rgb(16, 52, 58) |
| HSL | hsl(189, 57%, 15%) |
| OKLCH | oklch(30.2% 0.042 210.3) |
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 #10343A | 13.33:1 | AAA | Lc -102.8 | Preferred for body text |
| Black text on #10343A | 1.57:1 | Fails | Lc 0.0 | Not readable |
| #10343A text on white | 13.33:1 | AAA | Lc 99.6 | Preferred for body text |
| #10343A text on black | 1.57:1 | 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
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100
#E0EDEF
oklch(93.7% 0.014 207.9)
-
Step 200
200
#C5DEE3
oklch(88.4% 0.027 211.1)
-
Step 300
300
#9CCAD2
oklch(80.9% 0.049 209.3)
-
Step 400
400
#61AEBC
oklch(70.7% 0.079 210.6)
-
Step 500
500
#239AAB
oklch(63.2% 0.101 209.6)
-
Step 600
600
#008293
oklch(55.6% 0.096 210.7)
-
Step 700
700
#006D7B
oklch(49% 0.085 210.2)
-
Step 800
800
#005A65
oklch(42.8% 0.074 209.1)
-
Step 900
900
#004B55
oklch(37.8% 0.065 210)
-
Step 950
950 (this color)
#10343A
oklch(30.2% 0.042 210.3)
#10343A 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) | #2F323A | 0.040 |
| Deuteranopia (no green cones) | #292D3A | 0.037 |
| Tritanopia (no blue cones) | #003736 | 0.018 |
| Achromatopsia (no color) | #2F2F2F | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10343A
#10343A
oklch(30.2% 0.042 210.3)
- #412622
#412622
oklch(30.2% 0.042 28.9)
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 #10343A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.035
- Gunmetal #293241 ΔE 0.035
- Dark Blue Grey #1F3B4D ΔE 0.043
- Space Cadet #2B2D42 ΔE 0.046
- Oxford Blue #1B263B ΔE 0.050
- Jet #212529 ΔE 0.053
- Onyx #343A40 ΔE 0.054
- Dark #1B2431 ΔE 0.054
Use #10343A 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.