#45737B
Closest named color: Metallic Blue (#4F738E). oklch(52.6% 0.052 209.7), rgb(69, 115, 123).
Aa
White text reads best on this color (5.26:1).
About this color
#45737B is a medium-dark, muted teal or cyan. In OKLCH its lightness is 53%, its chroma 0.052 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.034 away. White text reads best on it, at 5.26:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 3.99:1 |
| White text | 5.26:1 |
Values
| HEX | #45737B |
| RGB | rgb(69, 115, 123) |
| HSL | hsl(189, 28%, 38%) |
| OKLCH | oklch(52.6% 0.052 209.7) |
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 #45737B | 5.26:1 | AA | Lc -81.4 | Fine for body text |
| Black text on #45737B | 3.99:1 | AA large text | Lc 28.0 | Dividers and decoration only |
| #45737B text on white | 5.26:1 | AA | Lc 76.1 | Fine for body text |
| #45737B text on black | 3.99:1 | AA large text | Lc -25.7 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEC
oklch(93.6% 0.007 208.8)
-
Step 200
200
#D0DCDE
oklch(88.6% 0.013 208.8)
-
Step 300
300
#B0C5C9
oklch(80.9% 0.024 210.4)
-
Step 400
400
#86A7AD
oklch(70.6% 0.037 209.9)
-
Step 500
500
#679299
oklch(63.1% 0.048 208.6)
-
Step 600
600 (this color)
#45737B
oklch(52.6% 0.052 209.7)
-
Step 700
700
#3E6870
oklch(49% 0.048 211)
-
Step 800
800
#34555B
oklch(42.7% 0.04 210.3)
-
Step 900
900
#2E464B
oklch(37.7% 0.031 212.1)
-
Step 950
950
#1B292C
oklch(27% 0.02 212.4)
#45737B 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) | #6C707C | 0.050 |
| Deuteranopia (no green cones) | #63697B | 0.046 |
| Tritanopia (no blue cones) | #2D7775 | 0.027 |
| Achromatopsia (no color) | #6C6C6C | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #45737B
#45737B
oklch(52.6% 0.052 209.7)
- #865F59
#865F59
oklch(52.5% 0.052 28.8)
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 #45737B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.034
- Deep Aqua #08787F ΔE 0.037
- Slate #516572 ΔE 0.041
- Bluegreen #017A79 ΔE 0.042
- Deep Turquoise #017374 ΔE 0.043
- Dark Aquamarine #017371 ΔE 0.046
- Ocean #017B92 ΔE 0.046
- Teal #008080 ΔE 0.048
Use #45737B 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.