#034F63
Closest named color: Deep Teal (#00555A). oklch(39.7% 0.073 222.6), rgb(3, 79, 99).
Aa
White text reads best on this color (9.12:1).
About this color
#034F63 is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 40%, its chroma 0.073 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.029 away. White text reads best on it, at 9.12:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.30:1 |
| White text | 9.12:1 |
Values
| HEX | #034F63 |
| RGB | rgb(3, 79, 99) |
| HSL | hsl(193, 94%, 20%) |
| OKLCH | oklch(39.7% 0.073 222.6) |
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 #034F63 | 9.12:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #034F63 | 2.30:1 | Fails | Lc 13.4 | Not readable |
| #034F63 text on white | 9.12:1 | AAA | Lc 90.5 | Preferred for body text |
| #034F63 text on black | 2.30:1 | Fails | Lc -11.8 | 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
#F0F7F9
oklch(97.1% 0.008 216.6)
-
Step 100
100
#DFECF2
oklch(93.5% 0.016 227)
-
Step 200
200
#C5DEE8
oklch(88.5% 0.03 223.8)
-
Step 300
300
#9BC9DA
oklch(80.9% 0.054 222.6)
-
Step 400
400
#5EADC8
oklch(70.8% 0.087 222.5)
-
Step 500
500
#1C98BA
oklch(63.2% 0.111 222.3)
-
Step 600
600
#00809F
oklch(55.6% 0.103 222.6)
-
Step 700
700
#006B86
oklch(49% 0.091 223.1)
-
Step 800
800
#00586E
oklch(42.7% 0.079 222.3)
-
Step 900
900 (this color)
#034F63
oklch(39.7% 0.073 222.6)
-
Step 950
950
#052B37
oklch(27% 0.046 223.9)
#034F63 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) | #434D64 | 0.057 |
| Deuteranopia (no green cones) | #384563 | 0.050 |
| Tritanopia (no blue cones) | #005556 | 0.034 |
| Achromatopsia (no color) | #484848 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #034F63
#034F63
oklch(39.7% 0.073 222.6)
- #673926
#673926
oklch(39.7% 0.072 42.8)
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 #034F63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.029
- Dark Grey Blue #29465B ΔE 0.034
- Dark Teal #014D4E ΔE 0.036
- Charcoal #264653 ΔE 0.036
- Dark Slate Gray #2F4F4F ΔE 0.043
- Dark Blue Green #005249 ΔE 0.049
- Petrol #005F6A ΔE 0.051
- Deep Sea Blue #015482 ΔE 0.052
Use #034F63 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.