#034F5F
Closest named color: Deep Teal (#00555A). oklch(39.5% 0.07 217.7), rgb(3, 79, 95).
Aa
White text reads best on this color (9.18:1).
About this color
#034F5F is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.070 and its hue 218°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.024 away. White text reads best on it, at 9.18:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.28:1 |
| White text | 9.18:1 |
Values
| HEX | #034F5F |
| RGB | rgb(3, 79, 95) |
| HSL | hsl(190, 94%, 19%) |
| OKLCH | oklch(39.5% 0.07 217.7) |
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 #034F5F | 9.18:1 | AAA | Lc -95.1 | Preferred for body text |
| Black text on #034F5F | 2.28:1 | Fails | Lc 13.3 | Not readable |
| #034F5F text on white | 9.18:1 | AAA | Lc 90.7 | Preferred for body text |
| #034F5F text on black | 2.28:1 | Fails | Lc -11.6 | 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
#F1F7F9
oklch(97.2% 0.007 219.6)
-
Step 100
100
#DFEDF1
oklch(93.7% 0.016 216.7)
-
Step 200
200
#C5DEE6
oklch(88.5% 0.029 219)
-
Step 300
300
#9BC9D7
oklch(80.8% 0.052 218.4)
-
Step 400
400
#5FADC3
oklch(70.6% 0.083 218.3)
-
Step 500
500
#1E99B4
oklch(63.2% 0.107 217.3)
-
Step 600
600
#00819A
oklch(55.7% 0.1 217.7)
-
Step 700
700
#006C82
oklch(49.1% 0.088 218.4)
-
Step 800
800
#00596B
oklch(42.8% 0.077 217.7)
-
Step 900
900 (this color)
#034F5F
oklch(39.5% 0.07 217.7)
-
Step 950
950
#052B35
oklch(26.9% 0.045 219.7)
#034F5F 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) | #454C60 | 0.060 |
| Deuteranopia (no green cones) | #39445F | 0.053 |
| Tritanopia (no blue cones) | #005454 | 0.029 |
| Achromatopsia (no color) | #484848 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #034F5F
#034F5F
oklch(39.5% 0.07 217.7)
- #66382A
#66382A
oklch(39.5% 0.07 37.7)
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 #034F5F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.024
- Dark Teal #014D4E ΔE 0.029
- Charcoal #264653 ΔE 0.034
- Dark Grey Blue #29465B ΔE 0.034
- Dark Slate Gray #2F4F4F ΔE 0.038
- Dark Blue Green #005249 ΔE 0.043
- Petrol #005F6A ΔE 0.051
- Deep Sea Blue #015482 ΔE 0.059
Use #034F5F 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.