#517D95
Closest named color: Stormy Blue (#507B9C). oklch(56.7% 0.061 233.2), rgb(81, 125, 149).
Aa
Black text reads best on this color (4.71:1).
About this color
#517D95 is a medium-dark, muted blue. In OKLCH its lightness is 57%, its chroma 0.061 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.014 away. Black text reads best on it, at 4.71:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.71:1 |
| White text | 4.45:1 |
Values
| HEX | #517D95 |
| RGB | rgb(81, 125, 149) |
| HSL | hsl(201, 30%, 45%) |
| OKLCH | oklch(56.7% 0.061 233.2) |
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 #517D95 | 4.45:1 | AA large text | Lc -76.3 | Fine for body text |
| Black text on #517D95 | 4.71:1 | AA | Lc 33.3 | Non-text elements, placeholder text |
| #517D95 text on white | 4.45:1 | AA large text | Lc 70.8 | Content text, not long reading |
| #517D95 text on black | 4.71:1 | AA | Lc -30.9 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#D0DBE2
oklch(88.5% 0.015 235.4)
-
Step 300
300
#B0C4D0
oklch(80.9% 0.028 234.1)
-
Step 400
400
#86A6B8
oklch(70.7% 0.044 232.8)
-
Step 500
500
#6790A6
oklch(63.1% 0.056 232.2)
-
Step 600
600 (this color)
#517D95
oklch(56.7% 0.061 233.2)
-
Step 700
700
#3E667C
oklch(49% 0.057 233.7)
-
Step 800
800
#345465
oklch(42.8% 0.047 232.6)
-
Step 900
900
#2E4552
oklch(37.7% 0.036 233.8)
-
Step 950
950
#1B2930
oklch(27.1% 0.023 230.3)
#517D95 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) | #727C96 | 0.042 |
| Deuteranopia (no green cones) | #687495 | 0.036 |
| Tritanopia (no blue cones) | #348385 | 0.045 |
| Achromatopsia (no color) | #777777 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #517D95
#517D95
oklch(56.7% 0.061 233.2)
- #946D55
#946D55
oklch(56.8% 0.061 52.7)
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 #517D95, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.014
- Cerulean #457B9D ΔE 0.020
- Grey Blue #647D8E ΔE 0.024
- Metallic Blue #4F738E ΔE 0.029
- Dull Blue #49759C ΔE 0.031
- Battleship Grey #6B7C85 ΔE 0.038
- Off Blue #5684AE ΔE 0.041
- Slate Gray #708090 ΔE 0.041
Use #517D95 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.