#345258
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41.8% 0.037 211.5), rgb(52, 82, 88).
Aa
White text reads best on this color (8.42:1).
About this color
#345258 is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.037 and its hue 212°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.018 away. White text reads best on it, at 8.42:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.49:1 |
| White text | 8.42:1 |
Values
| HEX | #345258 |
| RGB | rgb(52, 82, 88) |
| HSL | hsl(190, 26%, 27%) |
| OKLCH | oklch(41.8% 0.037 211.5) |
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 #345258 | 8.42:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #345258 | 2.49:1 | Fails | Lc 15.0 | Dividers and decoration only |
| #345258 text on white | 8.42:1 | AAA | Lc 89.0 | Fine for body text |
| #345258 text on black | 2.49:1 | Fails | Lc -13.2 | 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 800.
-
Step 50
50
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEC
oklch(93.6% 0.007 208.8)
-
Step 200
200
#D1DBDE
oklch(88.5% 0.012 217.6)
-
Step 300
300
#B2C5C9
oklch(81% 0.022 211.8)
-
Step 400
400
#89A7AD
oklch(70.8% 0.034 211.1)
-
Step 500
500
#6A9199
oklch(63.1% 0.045 211.7)
-
Step 600
600
#517B84
oklch(55.6% 0.048 212.6)
-
Step 700
700
#42686F
oklch(49.2% 0.044 210.4)
-
Step 800
800 (this color)
#345258
oklch(41.8% 0.037 211.5)
-
Step 900
900
#30464A
oklch(37.8% 0.028 210)
-
Step 950
950
#1C292C
oklch(27% 0.019 213.5)
#345258 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) | #4D5058 | 0.035 |
| Deuteranopia (no green cones) | #474B58 | 0.032 |
| Tritanopia (no blue cones) | #265554 | 0.020 |
| Achromatopsia (no color) | #4D4D4D | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #345258
#345258
oklch(41.8% 0.037 211.5)
- #5F4540
#5F4540
oklch(41.7% 0.037 31)
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 #345258, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.018
- Deep Teal #00555A ΔE 0.035
- Charcoal #264653 ΔE 0.044
- Dark Grey Blue #29465B ΔE 0.045
- Dark Teal #014D4E ΔE 0.048
- Petrol #005F6A ΔE 0.048
- Dark Blue Green #005249 ΔE 0.049
- Charcoal Grey #3C4142 ΔE 0.055
Use #345258 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.