#617898
Closest named color: Stormy Blue (#507B9C). oklch(56.7% 0.057 256.7), rgb(97, 120, 152).
Aa
Black text reads best on this color (4.64:1).
About this color
#617898 is a medium-dark, muted blue. In OKLCH its lightness is 57%, its chroma 0.057 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.021 away. Black text reads best on it, at 4.64:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.64:1 |
| White text | 4.51:1 |
Values
| HEX | #617898 |
| RGB | rgb(97, 120, 152) |
| HSL | hsl(215, 22%, 49%) |
| OKLCH | oklch(56.7% 0.057 256.7) |
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 #617898 | 4.51:1 | AA | Lc -76.8 | Fine for body text |
| Black text on #617898 | 4.64:1 | AA | Lc 32.7 | Non-text elements, placeholder text |
| #617898 text on white | 4.51:1 | AA | Lc 71.3 | Content text, not long reading |
| #617898 text on black | 4.64:1 | AA | Lc -30.3 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAEF
oklch(93.6% 0.007 260.7)
-
Step 200
200
#D3DAE3
oklch(88.6% 0.015 254.6)
-
Step 300
300
#B6C2D1
oklch(80.9% 0.025 254)
-
Step 400
400
#91A2BA
oklch(70.7% 0.04 257)
-
Step 500
500
#758BA9
oklch(63% 0.052 256.2)
-
Step 600
600 (this color)
#617898
oklch(56.7% 0.057 256.7)
-
Step 700
700
#4D627F
oklch(49.1% 0.053 256.6)
-
Step 800
800
#405067
oklch(42.7% 0.043 257.4)
-
Step 900
900
#364254
oklch(37.6% 0.035 258.3)
-
Step 950
950
#202731
oklch(27% 0.021 257.3)
#617898 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) | #6D7999 | 0.017 |
| Deuteranopia (no green cones) | #667497 | 0.012 |
| Tritanopia (no blue cones) | #507F83 | 0.049 |
| Achromatopsia (no color) | #767676 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #617898
#617898
oklch(56.7% 0.057 256.7)
- #8A7250
#8A7250
oklch(56.6% 0.057 75.8)
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 #617898, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.021
- Grey Blue #647D8E ΔE 0.025
- Cerulean #457B9D ΔE 0.031
- Dull Blue #49759C ΔE 0.032
- Metallic Blue #4F738E ΔE 0.032
- Slate Gray #708090 ΔE 0.037
- Battleship Grey #6B7C85 ΔE 0.037
- Off Blue #5684AE ΔE 0.041
Use #617898 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.