#507A99
Closest named color: Stormy Blue (#507B9C). oklch(56.1% 0.067 241.4), rgb(80, 122, 153).
Aa
Black text reads best on this color (4.58:1).
About this color
#507A99 is a medium-dark, muted blue. In OKLCH its lightness is 56%, its chroma 0.067 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.005 away. Black text reads best on it, at 4.58:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.58:1 |
| White text | 4.58:1 |
Values
| HEX | #507A99 |
| RGB | rgb(80, 122, 153) |
| HSL | hsl(205, 31%, 46%) |
| OKLCH | oklch(56.1% 0.067 241.4) |
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 #507A99 | 4.58:1 | AA | Lc -77.2 | Fine for body text |
| Black text on #507A99 | 4.58:1 | AA | Lc 32.4 | Non-text elements, placeholder text |
| #507A99 text on white | 4.58:1 | AA | Lc 71.7 | Content text, not long reading |
| #507A99 text on black | 4.58:1 | AA | Lc -29.9 | 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
#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
#B0C4D3
oklch(81% 0.03 240.3)
-
Step 400
400
#86A5BC
oklch(70.7% 0.048 240.5)
-
Step 500
500
#688FAC
oklch(63.2% 0.062 241.1)
-
Step 600
600 (this color)
#507A99
oklch(56.1% 0.067 241.4)
-
Step 700
700
#3F6581
oklch(49% 0.063 241.6)
-
Step 800
800
#345369
oklch(42.8% 0.052 240.4)
-
Step 900
900
#2E4455
oklch(37.6% 0.04 242.3)
-
Step 950
950
#1B2832
oklch(27% 0.026 242)
#507A99 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) | #6D7A9A | 0.036 |
| Deuteranopia (no green cones) | #637298 | 0.030 |
| Tritanopia (no blue cones) | #2F8284 | 0.056 |
| Achromatopsia (no color) | #757575 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #507A99
#507A99
oklch(56.1% 0.067 241.4)
- #926C4B
#926C4B
oklch(56.2% 0.068 61.8)
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 #507A99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.005
- Cerulean #457B9D ΔE 0.012
- Dull Blue #49759C ΔE 0.019
- Metallic Blue #4F738E ΔE 0.024
- Grey Blue #647D8E ΔE 0.032
- Muted Blue #3B719F ΔE 0.039
- Off Blue #5684AE ΔE 0.040
- Flat Blue #3C73A8 ΔE 0.041
Use #507A99 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.