#507B97
Closest named color: Stormy Blue (#507B9C). oklch(56.3% 0.064 238), rgb(80, 123, 151).
Aa
Black text reads best on this color (4.62:1).
About this color
#507B97 is a medium-dark, muted blue. In OKLCH its lightness is 56%, its chroma 0.064 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.008 away. Black text reads best on it, at 4.62:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.62:1 |
| White text | 4.54:1 |
Values
| HEX | #507B97 |
| RGB | rgb(80, 123, 151) |
| HSL | hsl(204, 31%, 45%) |
| OKLCH | oklch(56.3% 0.064 238) |
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 #507B97 | 4.54:1 | AA | Lc -76.9 | Fine for body text |
| Black text on #507B97 | 4.62:1 | AA | Lc 32.6 | Non-text elements, placeholder text |
| #507B97 text on white | 4.54:1 | AA | Lc 71.5 | Content text, not long reading |
| #507B97 text on black | 4.62:1 | AA | Lc -30.2 | Non-text elements, placeholder text |
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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D0DBE3
oklch(88.5% 0.016 239.1)
-
Step 300
300
#B0C4D1
oklch(80.9% 0.029 236.3)
-
Step 400
400
#86A5BB
oklch(70.6% 0.047 239.2)
-
Step 500
500
#678FAA
oklch(63.1% 0.06 238.5)
-
Step 600
600 (this color)
#507B97
oklch(56.3% 0.064 238)
-
Step 700
700
#3F667F
oklch(49.2% 0.06 237.8)
-
Step 800
800
#345367
oklch(42.7% 0.05 237.8)
-
Step 900
900
#2E4554
oklch(37.8% 0.038 237.7)
-
Step 950
950
#1B2831
oklch(26.9% 0.025 239.1)
#507B97 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) | #6E7A98 | 0.038 |
| Deuteranopia (no green cones) | #657397 | 0.033 |
| Tritanopia (no blue cones) | #318284 | 0.051 |
| Achromatopsia (no color) | #767676 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #507B97
#507B97
oklch(56.3% 0.064 238)
- #926C4F
#926C4F
oklch(56.3% 0.064 58.3)
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 #507B97, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.008
- Cerulean #457B9D ΔE 0.014
- Dull Blue #49759C ΔE 0.023
- Metallic Blue #4F738E ΔE 0.024
- Grey Blue #647D8E ΔE 0.029
- Off Blue #5684AE ΔE 0.041
- Battleship Grey #6B7C85 ΔE 0.042
- Muted Blue #3B719F ΔE 0.043
Use #507B97 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.