#40798B
Closest named color: Metallic Blue (#4F738E). oklch(54.5% 0.066 220.7), rgb(64, 121, 139).
Aa
White text reads best on this color (4.85:1).
About this color
#40798B is a medium-dark, muted teal or cyan. In OKLCH its lightness is 54%, its chroma 0.066 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.024 away. White text reads best on it, at 4.85:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.32:1 |
| White text | 4.85:1 |
Values
| HEX | #40798B |
| RGB | rgb(64, 121, 139) |
| HSL | hsl(194, 37%, 40%) |
| OKLCH | oklch(54.5% 0.066 220.7) |
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 #40798B | 4.85:1 | AA | Lc -78.9 | Fine for body text |
| Black text on #40798B | 4.32:1 | AA large text | Lc 30.6 | Non-text elements, placeholder text |
| #40798B text on white | 4.85:1 | AA | Lc 73.5 | Content text, not long reading |
| #40798B text on black | 4.32:1 | AA large text | Lc -28.2 | Dividers and decoration only |
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 600.
-
Step 50
50
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBEE
oklch(93.6% 0.009 225.1)
-
Step 200
200
#CEDCE1
oklch(88.5% 0.017 221.1)
-
Step 300
300
#ADC5CE
oklch(80.8% 0.029 222.4)
-
Step 400
400
#80A8B6
oklch(70.7% 0.048 221.4)
-
Step 500
500
#5F92A3
oklch(63% 0.06 221)
-
Step 600
600 (this color)
#40798B
oklch(54.5% 0.066 220.7)
-
Step 700
700
#356979
oklch(49.2% 0.061 220.3)
-
Step 800
800
#2C5663
oklch(42.8% 0.051 220.3)
-
Step 900
900
#284750
oklch(37.8% 0.04 218.4)
-
Step 950
950
#18292F
oklch(26.9% 0.025 222.2)
#40798B 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) | #6E768C | 0.055 |
| Deuteranopia (no green cones) | #636E8B | 0.049 |
| Tritanopia (no blue cones) | #0C7F7F | 0.042 |
| Achromatopsia (no color) | #717171 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40798B
#40798B
oklch(54.5% 0.066 220.7)
- #916352
#916352
oklch(54.4% 0.066 41.1)
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 #40798B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.024
- Cerulean #457B9D ΔE 0.029
- Ocean #017B92 ΔE 0.031
- Stormy Blue #507B9C ΔE 0.033
- Dull Blue #49759C ΔE 0.035
- Deep Aqua #08787F ΔE 0.039
- Sea Blue #047495 ΔE 0.041
- Teal #008080 ΔE 0.044
Use #40798B 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.